And you know this how? You have content available on Patron? You don't believe some people would not be upset that they expect a reward and it is denied because of some asshat? You don't believe that some people would be upset enough to pull support? In the real world these things do happen all the time.
Ooh, in the real world? Wow. You must be so wise and versed in its ways.
Yes, there might be some, though I honestly have no idea why I as a patreon would be angry and remove support for a dev BECAUSE SOMEONE ELSE LEAKS HIS WORK, but sure there might be some.
OTOH, are those more than the new patreons finding out about games on sites like this one?
Again, there are many successful games that get leaked here early, so the losses coming from that definitely can't be backbreaking.
Again, all the games I support I found out through this site and judging by what other people write, that's the rule and not the exception.
And again once more, I personally don't mind waiting a bit longer for a game I can't personally support or not high enough to warrant an early release to me, but I also don't believe that devs suffer a lot if it happens.
The positive effects of advertising your game outweigh the loss of a few stupid patreons who will blame the dev because his or her game gets pirated.
Yes, it's just my opinion, but it's based on being here on this site for 2 years, and a patreon for adult games almost as long.
Experiencing the community, seeing the success of creators who embrace it and seeing others fail miserably and stumble around with a few bucks a month who rage and rage and rage about those evil pirates and block patreons because they think they leaked their games etc..