Ok, not going to comment on the amount of time development is taking, but going to point out (again, since people fuck this up all the time), version numbers have basically NOTHING to do with actual progress through the development cycle.
Someone could use .01 as the first public release that's a 99% completed game, or the .01 could be the bare bones alpha. A 1.0 final release could follow from version .35, instead of the .99 many people assume it should. There's no real standardization between companies / development groups for version numbering, and even less if the developer has no formal programming experience.
A far better way to judge a patreon project is if they have a consistent update schedule, with decent content in the updates (for the development time, really judged on an individual project basis), and how much they communicate what's going on to the supporters (and publicly to a lesser extent.)