Re-arranged, bottom line up front:
But I don’t want to name and shame in this post.
Why not tell us which platform it was, purely for troubleshooting purposes? Was it Reddit? Medium? Surely not X (Twitter)?

No, no, and no—but it’s one of the top web spaces on the Internet, as big as any of those. Bitcoin has sometimes been controversial there; if you follow my post history, you may know that I once bumped a
twelve-year-old thread about that. I avoided naming the site, because I do want a constructive solution—and moreover, I seek a general check on whether others have had the same problem elsewhere.
If I wanted clickbait for a hot thread with ten pages in the first hour, I would’ve put the site’s name in the topic title. Should I edit it?

Anyway, let me try to answer your three questions.
1. How big is this problem?
I don't think it's particularly widespread, or at least I haven't encountered it myself.
Well, no news is good news—unless this is an early warning of new censorship, which may spread.
2. What are some constructive strategies to handle it?Well, first of all, stop posting spam!

Just kidding!
Hey, I only spam Lukecoin. I urge everyone to spam Lukecoin.
Spam spam spam Lukecoin, for the greater good!
I think we should first identify which websites are blocking bitcointalk.org and whether they're using their own spam filters or relying on third-party services.
If it's a third-party service, perhaps we could contact the provider and request a review or removal of the domain from its blacklist.
It might also be useful to collect examples of legitimate Bitcointalk links being rejected on different platforms. That would help establish whether this is an isolated case or something more widespread.
Good idea...
And if a website insists on blocking certain domains, at least its spam filter should warn users during editing or previewing, rather than waiting until they hit Publish.
...
good idea.

Whether he [theymos] already has an established process for handling such cases is something only he can confirm.
Yes, only @theymos can answer that one.
But I'm sure he cares deeply about this forum. After all, he's still running the show after all these years.
I mean, unlike certain legendary members, he never disappeared for four years and then returned to declare war on ChartBuddy and censorship robots! 🤣
Hey! I’m not at Legendary rank; I am only a Hero Member. I’m basically new here. And
my assault on ChartBuddy should be offset by Meretrix
XXXXXXX XXXXXXX XXXXXX XX ChartBuddy, as seen
in her censored “make love, not war” kind of a post.
I follow very few members here on Bitcointalk, and you're one of those whose posts I genuinely enjoy reading.

Thanks. Given my propensity to be so very outspoken, it’s been a long time since
people tended to praise me.

Since your return, I've been getting notifications with some rather interesting titles:
"Protip: Porn stars are human."
"Why Lana Rhoades?"
Sigh. For the record, none of my post
titles have cited Lana Rhoades by name. I’m now sad that
stompix randomly picked Lana Rhoades as an exemplary porn star. I’ve never even seen Lana naked—
many others, yes; Lana, no. If I wanted to discuss a current or former porn star here, then for reasons that have nothing to do with her appearance or her oeuvre, I would not choose Lana.
Lana
is a human being.
I shan’t quietly abide others speaking of her or anyone else in vicious and dehumanizing terms, on the sole basis that the person has had sex on camera.
Incidentally, speaking of @theymos, I’m pretty sure it must have been against moderation policy on GirlsGoneBitcoin to call the girls “sewer pipes” and shame them for “whoring themselves out”. Though I guess
Baseplate would deem theymos a pimp for GGB; I was distracted yesterday, so I forgot to ask why he registered for a forum with such a sinful administrator.
In the big picture, this is also related to a free speech issue. Speaking of GGB, of censorship, and of theymos questions—
GirlsGoneBitcoin was banned? (I don’t know; I never involved myself with anything on Reddit.) There’s a mass-movement afoot to shut down sexual speech, to wipe it off the face of the Internet—and to cast its speakers out of society as pariahs. All of these things are parts of a whole. I, for one, will fight it on all fronts.
—Eh, sorry-but-not for derailing my own thread. It’s been years since I was so angry as I was yesterday.