[BugsJustFindMe]

It's fine to say that begging is ok. I also think it can be ok. It's even possible to call this not begging if you believe that it lacks non-reciprocity (personally I don't think so, but anyway). But it feels like you have a very weird definition of begging based on the rest of your description.

> They are not nagging

Begging and harassment are two different unrelated things that are sometimes done at the same time but not necessarily.

See the difference between

https://en.wikipedia.org/wiki/Begging

and

https://en.wikipedia.org/wiki/Aggressive_panhandling

> you do not have to buy them a coffee/pizza/metaphorical food item.

Yeah, that's how begging works. You do not have to give money to the person begging.

> You can go on with your day.

Yes, that's how begging works. If they had you at gunpoint it would be called robbing.

[danillonunes]

Not a native English speaker, so I may be far off on this discussion, but for me this kind of activity where you write a blog post and ask for donations is closer to busking than to begging.