I honestly prefer playing most games with the joy-con separately. I love how lax it is to just lounge around with your arms any which way. For some reason I like playing with my hands crossed over on my lap. And for games that don’t work as well with separate joy cons (which is only Splatoon 2 in my case) slipping them onto the joucon holder works just fine.
I really don’t get why people say the pro controller is drastically better, I play Splatoon 2 just as well either way.