This is an excerpt from a post on the Lutris Patreon page a few months ago:

The slow and consistent decrease of financial support

On a less positive note, I’d like to address the painful direction the Lutris Patreon (and financial support in general) is taking. The current earnings of the Lutris Patreon is about half of what it was in September 2020. This was a time before the Steam Deck when Lutris was far less complete than what it is today.

…

I fully understand that the current economic situation makes things harder for most to give to open source projects and can’t thank enough all of you who still make monthly donations! I’m slightly hopeful that the introduction of cloud saves in Lutris will change the direction the Patreon has taken. While self hosting your cloud saves with Nextcloud will be the default option, it will also be possible for $5 Patrons to host your saves on Lutris.net.

In any case, working full time on Lutris will soon come to an end since it is not sustainable and I will eventually run out of savings.

You can see a graph of financial support for Lutris on Patreon over time here: https://graphtreon.com/creator/lutris#