To be fair, there are various games that are clearly heavily inspired in movement and/or visuals by HK. (like Never Grave, or Crowsworn, or Gleamlight).
Thing is, those games are deriviative, in that they are their own creative work, that’s at least original art even if it’s copying some of the notes of something else. And HK is a huge, beloved game in the indie scene- why wouldn’t there be shitloads of games taking inspiration from it, in the same way that Mario spawned imitators, tons of animal mascot platformers followed Sonic, and loads of extremely good indie games ride a nostalgia wave for genre-codifiers or highlights from the 8-bit/16-bit era. Blazing Chrome is essentially Contra III down to its jump arc, Infernax is essentially Castlevania 2, Battle Princess Madeline is essentially Ghouls and Ghosts, Wargroove is fantasy Advance Wars, The Takeover is Streets of Rage. Popular games get imitators, some more immediately deriviative, some a few years later, some decades later.
Original games deriviative of HK aren’t the same thing as outright asset theft of character skeletons and reskinning designed. In the same way that just being a monster collecting game inspired by Pokémon (or DQ Monsters), or a run-and-gun game inspired by Contra isn’t plagiarism, it’s being part of a genre.
It’s like, Fenix Rising takes obvious notes from BotW’s lush colour palette and sense of freedom. But what it’s not doing is just reskinning Zelda’s bestiary.
TLDR: not every game that looks like a recent very popular game is plagiarism, and even the difference between deriviative and expanding the genre is usually a matter of the quality of the execution rather than how close the visuals are. Gleamlight was a very poor game even if at first glance at a screenshot, you’d think ‘that’s HK with stained glass in the art direction’.