This might upset some of the folks in the sub but I've heard this song and dance for at least 7 years. Every time an altcoin is developed that does something interesting, there's a maximalist that says well theoretically Bitcoin could also do that...

I think the point is that right now and most likely into the near future at least, Bitcoin does not do this stuff via side chain and will not do this stuff via side chain.

So you can claim that people who are interested in altcoins are only chasing huge multiples and don't understand the technology and are just a bunch of losers because they aren't Bitcoin maximalists, but I think it's a lot more nuanced than that and to accept that as a narrative is very ignorant in my opinion or at least extremely lazy.