This is the only game dev I've ever put my money on but I'm kinda regretting my choice of donating. You're making an overkill amount of money but I don't see that being translated into better or bigger updates.
I've been a supporter since almost the beginning. Are there times when I considered dropping support - sure, but my biggest issues - almost no communication with their supporters and too much time (about 1 year) to get the last rev (v 0.4) - have been addressed.
There is better, more consistent communication now and the v 0.5A rev took about 5 - 5 1/2 months - a significant improvement over the last rev.
If you feel like you are not getting enough for your support, then consider supporting a different creator who does give you what you want. You can always return down the road and, if there is enough content for you to justify it, start supporting on Patreon or SS again.
For me personally - there are some creators who I've found that I will give a set amount of $ support to as my way of thanking them for the time and effort they put into a good/great story, particularly if I find that story after it is already completed.
While you are a supporter, consider taking the time to share what you like/dislike about Radiant with the dev on Patreon or SS so you have a better chance to be heard.
And regardless of what you choose, I hope you get to take the time to enjoy Radiant and the latest rev.
Cheers!