@Ovidiu15,
Maybe you and I have a different definition for negotiate, but my understanding is that it involves a give and take in order for all parties feel like comfortable with the arrangement. The inquirer wanted to pay a discounted rate and receive the same level of amenities as the listed price, but made no concessionary offer in exchange for a lesser rent. It seems like they made a "take-it-or-leave-it" proposition that was based upon their money, and inability or unwillingness to pay the listed rate. This was not an attempt to negotiate.
You have called me rude and unprofessional, but there is also proper etiquette for guests. I was taught that it's impolite and inappropriate make unsolicited offers. The inquirer made a proposition without consideration of our financial situation, the reason why we rent spaces in our home, or if we felt it was culturally fitting. I don't agree with your implication that hosts should consider a guest's financial situation beyond competitively pricing their rentals and providing good value. Hosts usually make price adjustments based upon their rental activity, operation costs and desired profit (if any), but not the requested prices from guests. Listing on an OTA is unlike FB Marketplace, Craigslist, eBay, Gumtree, or the Loot where a property owner may invite potential renters to make a best/near offer or barter.
I don't know what your hosting experiences have been like, but ours are that the majority of the time when discounts have been given the guests overuse amenities, cause damage, ask for more unadvertised stuff, take things, leave the space very untidy, and they usually don't notify us or want to make compensation for their misdeeds. Please share how you respond to your guest requests that ask for significant discounts solely based upon their assertion that they didn't like the spaces that fit into the budget, or explain how a host can get paid for a repair/replacement when the excellent, but broke, guest causes inadvertent damage or loss. In my opinion, it would be nonsensical for a host to expect that a guest who's asked for an additional 40% off of the monthly rate will be in a position to pay for and expenditure that's worth asking for.