This is tricky.
I think a lot of folk remember the 250rs from when it was newish, and so they were a lot younger and…well, lighter?
I last had one 5 yrs ago, and was still a skinny feller of 62kg (10 an a bit stone in old money). Diagnosed coeliac and not eating gluten, I’m now a coupla stone heavier, but still below average “biker weight” so I think thry are still fairly brisk.
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A nicer answer might be that once its warmed up, you can rev it quite a bit, you arent being unkind, its meant to do that. Maybe have a shot of someones 250Suoerdream, which feels loads bigger but more sluggish. Or the 90s/noughties CB250 Nighthawk, v dull indeed.