They openly talk about how they took what was successful in those platforms (React and Angular) and others, then built Vue with that in mind. Plus their goal from what I've heard was to also remove what other platforms did poorly (benefiting from hindsight) and hopefully do those things better by learning from their mistakes.

Nothing about how they said this was done in a manner that was boisterous, just simply leveraging what has been learned from first movers and now they are hoping to pull their own Apple, by making a better product as second (or third or fourth.....) movers in the market. ;)