The new pubmed is fine. I've been using it nearly daily for a few years, so from well before the redesign, and it does the job it needs to do. You're going to get outsized backlash if you make any change with how non-tech-savvy and conserved the biomedical research community is. The new version looks nicer and seems to do a better job of searching articles using citations you copy (forgot which Twitter user pointed that out). It's perfectly fine amd this is really the only article I can find about this supposed backlash - a few tweets does not signify community outrage when most researchers are probably not on Twitter and are currently spending their time panicking about the impact nonessential research shutdowns are going to have on their career goals