There are jackholes in every league who can't do sixth grade math and therefore don't understand how handicap works. You can't reason with them, you can't explain simple arithmetic they should have learned 20 years ago. You can only ignore them and have fun.
There are some teams in my league that I don't enjoy bowling. Some individuals that I wish would find some other diversion on Tuesday nights. But really, we can't tell people not to bowl, if for no other reason than we cannot afford to lose more bowlers.
You could ask the league president or sergeant-at-arms to speak to these guys about their attitude. It may not change the way they feel but it might keep them from being such jackholes about it.
SH