@Claudia2589 As far as these discount requests having been cut and pasted and sent to multiple hosts, yes, that is happening.
There was a guest who posted here a few months ago, very proud of his blog, directed towards digital nomads, that advises fellow guests to always ask for a discount, and to send them out to about 40 places.
As if that wasn't disrespectful enough of hosts' time, he had suggestions as to how to word the request, which were quite offensive- one was to point out to the host how much better it would be for them to have a solid guest in there for a month or two than to deal with having to clean every few days for short term guests, or that in case they didn't manage to book out all available dates, some money is better than no money. I.e. trying to tell hosts how they should run their business.
This crap is all over the internet, so it's not surprising that inquiries and requests are becoming more entitled and less personal.