We posted 50 real jobs on Upwork last month. Not to hire anyone. To see what the other side looks like. There is a folder at the bottom of the buyer's dashboard called Other Proposals. Most buyers never scroll far enough to open it. Proposals that fail Upwork's AI filter get quietly moved into it. Technically still there. Practically invisible. Your proposal is probably in it right now. 3,147 proposals read from the client's side. $7.
Not enough history yet to show a trend.