I’d suggest you try something yourself before incessantly bashing someone for doing something out of faith. If you have, than I surmise you had a bad experience with it, but either way, lay off the guy for tithing.
He didn’t say he fulfilled the law, he didn’t say those who don’t tithe won’t be blessed, and you’re completely wrong on indulgences.
If you have finanical insight, fine, but just throwing rocks at someone because you think all churches are family killing mindless organzations is not what we’re here to discuss.