I kinda doubt it. They are one of the two most recommended hardware wallet makers so they don't really need more advertising.
Eh, I don't know about that. Coca-Cola has been the #1 soft drink in the world for decades, and they still spend an enormous amount of money on advertising--and the same holds true for a lot of companies at the top of their game. Word of mouth advertising is great for any business but I think Ledger might benefit from a little bit of traditional advertising.
OP, you're no dummy and I wouldn't expect stupid threads being created by you--but I don't understand why you're asking this question. How many signature advertisements have you seen lately? I've got sigs and avatars blocked, so I wouldn't know. I've got the Services section on ignore, too, so I wouldn't have noticed it had Ledger started a campaign thread there.
I'll take a look at that thread, see if I see any shilling.
Edit (from that thread):
I would not waste a single dollar satoshi for ledger wallet, and they are probably going to end up like Keepkey soon, brick selling for $5 but nobody will use it anymore.
Ha ha, OK I didn't realize dkbit98 hated Ledger devices so much. But as bad as you think they are, I don't think they are or ever will be as bad as that awful Keepkey. I respect your opinion, though.