As a regular 30s dude, definitely not 1% by any measure, app dating had its rough spots but generally was a good time, I experienced no bitterness.
Instead I met a bunch of interesting people and found my partner. We now own a house and are talking about kids.
The real toxicity here is the idea that women at large are somehow responsible for anyone's lack of dating success.
For anyone reading this who might be dating and feel disheartened- the hard truth is that you have two options: you can either blame the group of people you're trying to attract for having faulty preferences, or you can reflect and work on yourself and your approach. Only one of these has any chance of helping you.
One thing I do agree with you on: bitterness is extremely unattractive.