We have to top off daily with these Chinese TPU tubes too, or at least check the pressure daily.

This whole "you don't need to air up daily with TPU compared to latex" thing isn't true, or at least, it does not result in less work. I have to stick a pump on my tires every day to make sure that one of my TPU's didn't suddenly drop 20psi in 24 hours due to a random failure where the TPU material becomes porous in one spot. It already happened to me once. Even my perfectly functioning TPU tubes lose a few PSI a day, so I will not go even 2 days without putting a pump on them.

Then of course there's the "TPU blew a hole randomly when bike wasn't being used, tube goes in the trash" moment that users have experienced. That also happened to me once. And I'm not even running high PSI's. That tube had 60psi in it when that happened, on a 32c tire.

This is why I'm going to switch to latex. Same amount of work but a lower failure rate. I would try a good TPU brand like Pirelli, but the Vittoria latex tubes are cheaper, so it's kind of a no-brainer for me at this point.