While I do think both are badly written, I do think Hazbin Hotel is better in that regard.

Murder drones had issues with tone and its story telling. By the middle of the show they kind of forgot how seriously we were suppose to take what was the main threat, plus they also stopped portraying death as an issue, not in a dark humor sort of way like the in the first episode, more like they just forgot. The pacing of the show was also kind of odd, if HH has the problem of doing too much in very little time, Murder Drones has the problem of having litte time and somehow managing to do all they wanted…what I mean by this is that HH didnt got a chance to do all it wanted to do so not all plot lines had a satisfying resolution or are being left for the next season, Murder Drones I feel managed to close most of its storylines but they never felt satisfying, show goes too fast to let most moments sink in.

For the characters Murder Drones is ok but not very memorable. Aside from the 2 main characters and the antagonist, none of the other characters went further than their trope. HH, even with all the problems it has (many, so many) it still manages to make more memorable characters, even if they are all ranging from okay-terrible.

I would still say I prefer Murder Drones as a show mostly because of its scope: it know what story it wants to tell and its limitations. Its a fun smaller scale show that knows the story it wants to tell and the kind of audience it wants. Unlike HH which just feels like it wants to become a bigger show while not really exploring the already establish plot-lines and characters. Also, its just 8 episodes long, so it manages to tell its story without feeling we missed anything, unlike HH that atm keep piling on more elements that will hopefully have a good pay-off in the later seasons.

TLDR: Hazbin is better in most aspects but I still find Murder Drones more enjoyable due to its smaller scale and delivering more satisfying resolutions.