Yeah.. Patreon game devs have a weird tendency to suffer health issues after they start making a living off it.
They've had their Patreon up for over 3 years, so they "started making a living off it" quite some time ago.
Not sure how you qualify "giving birth" as a simple "health issue".
It's far more than "health", it's ongoing added responsibility for the life of something which cannot take care of itself.
I think that (alone) is a pretty justifiable reason for it taking longer.
Seems as though you're making the same mistake that has been made multiple times, in this thread.
Applying the bad experiences\behaviours you've seen with other devs, to this dev.
Yet there is no valid reason, or justification to do so.