Herijuana has 22% THC level. Check it out at Sannieseeds. Heard of people pulling it up and throwing it away because they say it was too strong.
I am curious about something. If someone's plants were still growing, which appears to be the case since you said you; "heard of people pulling it up and throwing it away because they say it was too strong," how in the wide, wide world of sports did they know what the finished product would be like? Wouldn't it make sense to let the plants finish and properly dry and cure their crop and only then decide if they were macho, macho man enough to toke it?
Possibly someone took an early sample and were floored, but even then it would not be logical for anyone to yank their unfinished plants and instead of allowing them to finish begin to grow some Ghetto Gold or Roadside Red that they might be able to handle.
I have to believe that even if someone who grew Herijuana didn't pack the gear needed to enjoy it they must know someone who, unlike them, had grown a pair and then grew hair on them and would be able to handle potent pot.
I have grown since 1972 and never, not so much as one single time, have I ever heard of anyone yanking out their plants and disposing of them because the smoke was too potent .... never.
But then I never hung around with bubble-gummers either.