No, Apple stands in the way. If you mean browser engine, still true: WebKit was forked as Blink on 4/3/2013 and diverged on both sides since.

The time for a new engine may come, and I saw a clean room one go by on HN the other day. It's very hard to get to webcompat. Gecko loses compatibility as Firefox loses market share. For now, the more important fight is a level up: tracker blocking, users dealt into the economics, intermediaries and big tech dealt out.

Point taken ... safari numbers are a little inflated by the iOS share, however, they are devices and that is where the web is used.