Software-wise, I use CSP for the majority of the process nowadays. I also use Medibang Paint for some editing and, since I prefer the file-saving system, actually finishing pages for upload.
I really like CSP because I'm an old man at heart; I want to buy it once and own it forever. It's got a lot of time-saving tools, and I don't even use all of them. I like Medibang - and used it exclusively for years - because it's free and powerful. I'm still trying to figure out how to cheese my fave Marker 2 brush from Medibang into CSP.
Pg 70 (Medibang) vs Pg 71 (Clip Studio)
TL;DR - I think artists should mix and match to find whatever combination (or lack thereof) is most comfortable and useful for them.