Probably not - for me it’s more that the majority of my negative experiences on Lemmy have come on lemmy.ml, so the sticking point really is your involvement with it.

For a lot of other people in these threads though, it does seem like funding the hosting is the biggest deal. If the server costs for lemmy.ml are as low as you say, splitting off the hosting costs separately in some way (like taking donations directly from lemmy.ml that go into their own account separate from general Lemmy donations, for example) probably would see at least some sort of increase to donations to Lemmy.

If it wouldn’t be too much extra work, it’s probably worth a shot.