So here's the thing. If 'first'ing is allowed on QQ, then there will be a group of posters who will have a strong tendency towards spamming new threads and update posts with attempts to be 'First'. If it's not allowed, stopping it early is preferable to trying to stop it once it's gained momentum.
It may eventually become a standard part of the QQ community if it is allowed once it's started. If we have a ruling on zero-content posts we'll know that we can report them and head off this behavior before it becomes entrenched.
Saying you liked a chapter or 'TFTC' posts aren't there for you as a reader, they're there as a message to the author.
As an author, relying on likes doesn't hit the dopamine button, but seeing plenty of people invested and actually posting thanks does.
Something like "First!" is bad because it's very clearly just there for pointless internet bragging rights, something like "TFTC" is fine because it's expressing that you liked the chapter/story. And frankly, if you can't handle people saying "TFTC", Reader Mode is right there. All punishing saying 'Thanks" or 'Nice Chapter' will do is lower engagement, imo.
Sometimes I just want to say I liked a chapter and want to thank the author. That's "Zero Content", despite the fact it might be appreciated by the author. And I'm more interested in letting the person writing the story enjoy writing the story than some rando getting free content complaining about having to scroll a whole fraction of an inch past a post they don't like.
'Ignore' and 'Reader Mode' are things that exist. The tools are there for you to curate the responses to a story you want, no need to scour all responses you personally feel 'aren't good enough' to count as feedback/engagement from everybody's view.
And IIRC 'Firsting' isn't allowed, it's covered by the 'Don't be a dick' rule, imo.
...Also it tends to be something found mostly in younger viewers, so usually the people that would do it out themselves pretty soon as being underage, and get perma'd.
TL;DR Just put Jason Wu on ignore if it's so incredibly important to you, fam