They have no idea, and, most importantly, don't want to have any, about how trading platforms work, which of them are safe etc.
This is such a small obstacle, that anyone who had the slightest bit of desire to buy Bitcoin easily overcame it. Sure, some users will use this new opportunity to buy Bitcoin, but most of them will probably be already familiar with Bitcoin and trading, as opposed to users who will be buying Bitcoin for the first time. So, to me the title "300 million users could be trading bitcoin" sounds highly misleading, with that reasoning you can say "7.5 billion could be using Bitcoin", just because anyone has the ability to download a wallet.
I don't completely disagree with you. Indeed, it would be more fair if the article was titled "Some of the 300 million users could be trading bitcoin ...". But that's not how journalists name their articles, and we all know about that, right? They want their article to be read by as much people as possible, so they exaggerate things a bit in the title. I even think they are taught to do so in the places they learn journalism, and that's why we see similar titles pretty often. I personally think that the content of the article is what is really important. If there is some interesting info inside, we can forgive a clickbaity title.
I disagree with your last sentence. Telegram users, who are not trading currently, don't do it because they are not traders. They have no idea, and, most importantly, don't want to have any, about how trading platforms work, which of them are safe etc. If they will be provided with opportunity to do easy trading on the platform they know, some of the 300 million Telegram users will start doing that, I'm sure.
I like your open mindedness. It made me look at this event from another side instead of just focusing on their privacy issues (which are very serious and shouldn't be ignored).
It could indeed be that people either haven't been exposed to trading in general, or know about trading, but simply prefer to not leave the ecosystem they are comfortable with, mainly with how crypto exchanges have been quite a subject of discussion when it comes to hacks and whatnot. If this ends up bringing in some more liquidity, that would be cool.
Thanks for your support! There are so many completely negative things around that I'm trying to find positive sides where they can be found at all, to avoid ending up rejecting everything.