I dislike cyclists on the pavement when they come flying along and expect you to get out of their way. And in fact a few years ago I was told to get out of the way by a mother and her small son. When I refused she said I was being a [insert insult of choice] because her son was only 4 and couldn't go on the road. Fine, but get off and walk past a pedestrian, don't expect me to walk in the busy road. I can't see the issue with cycling on a footpath if it's empty and the road isn't. Why hold up cars if you don't actually need to.
I don't think cyclists generally get a bad name for riding on the pavement. That's reserved for those who insist on riding through red lights in London. And cycling up the inside of lorries turning left despite the fact that if it goes wrong the person on the bike is going to come off a lot worse then the lorry driver.
It's always annoying when organisers are coy about medals. There's a race local to me that I've never done because they never explain whether everyone gets a medal or memento or just the winners. It's 10 miles which is quite a lot for me, so if I run that far I'd like a medal even if I don't win. SPELL IT OUT.
To be fair, I think that particular race has finally said everyone gets a medal this year.
In fact I remember someone commenting on me once. I wasn't oversized but I was wearing a pink oversized event t-shirt (occupational hazard for XS women when the only t-shirt left is a unisex M). I heard someone call me a running marshmallow. I didn't wear that t-shirt again! Fortunately a lot of events size their t-shirts a bit better now.
I think some oversized people do get abuse if they just go out for a run around their local area. It's utterly ridiculous - there they are, out running and trying to get fitter and they get ridiculed. It's clearly better for them to sit on the sofa at home eating cake. Idiots! So yes I agree that parkrun is a safe place for them to run.