At the risk of being indelicate, I rather think the primary motivation can be found right within your signature block. As further support for this notion, visit my signature block.
They didn't use sig blocks. Simply spamming a question/comment that can be used in any thead. On the same page is:
Is there any Slack/Telegram group to talk with the dev easily???
If I was trying to spam threads, I would be all over the place, instead I limit myself to what I care about AND more specifically, I try to answer as many posts in a single response post.
Kindly deduct my credibility points. I can afford to lose plenty.

There's a new option in bitcointalk profile to hide all signatures.
Thank you.
Michail1 is a rare exception to this rule.
Thank you.
(I'm not affiliated with BB, getting no money for this sig, only using it because I believe in it)
Kudos to you. Seriously.
Happy to see the value appears to have leveled off. Yea for BB.