80K seems optimistic, unless it's a really good corner in NYC or San Fran.
The local (Tampa) news did a story about 5 years ago and interviewed a bunch of panhandlers locally. The consensus was $20-$25 an hour was doable for the couple hours of rush hour, and $150 ish a day was pretty common. Every panhandler they talked to had an apartment, and most had cars they used to get to good corners.
And yes, begging for money when you are able to work is tacky, whether you do it on a corner or on Gofundme.com.