Pretty much anything you say on this forum has an implied "in my opinion" attached to it, unless it's a blatantly obvious fact, in which case the distinction wouldn't matter anyway.
The problem with that is that you can always use it as a defense for lying, and often someone would draw the line at some arbitrary point where many statements would be approved (as "your opinion") but many others would be disallowed (where "your opinion" crosses the line). The more you exaggerate an example for this, the worse it gets. Why is he allowed to lie about Bitcoin here without consequences but not about some senior user? Does it matter what exactly the lie is? Is it because Bitcoin can't defend itself that makes it allowed?
What happened to free speech then? It's free until we don't like it?
If the allegedly lying person is disruptive to the discussion of a specific topic then we have a bunch of forum rules (trolling etc) that should be applied, which obviously doesn't work in this shithole of a forum, but guess what... your red trust does nothing to discourage or prevent that sort of thing either.
In this particular case though (alani123) I see a lot of hurt feelings but no particular malice. Having a different opinion or even being mistaken is not the same as lying, which implies intent to deceive.
Is taproot important? Not in any functional way.
While he did use "important" and it can be seen as a judgement (not that many will take it as this), it changes when it is coupled with "functional way". The interpretation of this can be many depending on the reader, one of which could be "taproot does not bring functional improvements". With taproot we are talking about facts, and the only correct assertion regarding it in the context that is spoken would be something like this: Taproot is very functionally important/has many functionalities/use cases but it is not important to me. Every other kind of interpretation is wrong. There is nothing to debate about that as
taproot's functional importance is factually real (even if we are use the "judgement" word "importance"). If those functionalities or their importance are not obvious to someone, that doesn't change anything about it. If one is not familiar with the topic, one should not make assertive statements.
That's a lot of... stuff. You ignored the implied "in my opinion" and added your own speculation to twist it into something nefarious. Is that the only way we're allowed to discuss Bitcoin features? Praise it before saying anything even mildly unfavorable lest someone twist it into a pretzel. That's some Nork shit, and not in a cool Australian way.