This struck me too, if you're relying on instruments that exist in a universe where its constants are changing to measure those constants, then it seems very natural to me that your measurements would not necessarily change.
The constants instruments use to measure other constants might change at the same rate, leaving measurement results constant.
Then again, I'm not a physicist, so I'm nowhere near an expert.
About support: I have a Framework laptop. With my initial shipment I received a defective Ethernet expansion port. The failure was difficult to identify, but support was incredibly responsive and helpful. Once it was confirmed the issue was due to a defective Ethernet card (which took some investigative effort), a replacement was shipped immediately.
All this to say that, if you live in a supported country in the EU, I see no reason that people may find their support lacking.