Rev 9:21 is always understood in reference to idolatry.

i.e. David E. Garland, Revelation: “The ‘sexually immoral’ (fornicators), practitioners of ‘magic arts, the idolaters and all liars’ are those associated with idolatrous practices (cf. 9:21; 18:23; 21:27; 22:15; contrast 14:5).”

Better luck next time getting God to kill people for touching people!