Incorrect, nothing to do with Alonso.

Honda engines have won F1 races again recently and became the first team to bring a real fight to the Mercedes - all this while mounted on a Red Bull and driven by Verstappen. None of this has had anything to do with Alonso, since McLaren is running on Renault engines since 2018.

in fact, Honda has been throwing shade at him on Twitter with "GP2 victories", in reference to some comments he made on team radio

Honda most definitely got over it, they are doing pretty well everywhere and also now winning races in F1, being the first team to bring a real fight to the Mercedes since their dominance began. And of course