I'm not sure the problem reported here is a "cleaning fee" increase issue. If a cleaning fee appears ridiculous (which this one obviously is), what's forcing anyone to book the property? Thisso-called cleaning fee here is highly suspicious and a red flag, particularly when you consider the very low per diem rental fee... My sense is that the landlord shows these number to justify diverting the "cleaning fee" to a related person or "prête-nom" in order to split the income and minimise his fiscal liability. If it sounds ridiculous and fells ridiculous, it probably is. Stay away from it.
I've had rental properties for over 20 years, and the cost of cleaning, post Covid, has doubled from pre-Covid. I charge the actual costs, $225.00 for a very large 4 bedroom, 3 washroom chalet on a lake. The example given here does not appear to have connection with the real issue of "increasing cost of cleanings" for landlords. What business is it of the platforms to judge what our cleaning is or should be.
I addition, in some jurisdictions, like Quebec, the "cleaning fee" is not subject to the "lodging tax"; Could be he's trying to minimize that tax for the tenant. But when the tax man comes to check the logic of the numbers that won't fly.