Earlier quoted context omitted.
I haven't got the ideas why many frontend jobs require experience in React whether it's for a new or existing projects, maybe I need enlightenment.
Because HR (and IT strategy) nowadays is a farce, managers, decision-makers and the actual organizational units that do hiring rarely have the necessary systemic big-picture knowledge/information, foresight, experience, longitudinal thinking that would allow them to venture out of their preset suboptimal ways.
The worst experience so far was for a general full stack role. They sent me a 3 page long PDF of job "requirements" which was a lot of fluff and implicit stuff. I get it... but I think that can be reserved for later. Not the best offer, seemed like they were disorganized in general, etc.
The best experience was for the best TC offer _and_ most relevant position for me... they sent over half a page that didn't waste a single character. Named a few frameworks but they had a crystal clear idea of what they needed. It was amazing, lol.