IIRC Bangood/Astrolux started gluing with the S41, after some justifiable criticism here of some poor detailed design and shoddy workmanship, not least by me. Making it far more difficult to prise them open for the necessary corrections. It felt like spite.
Consider: the A6, X6, X5 etc. would have been less interesting to enthusiasts if glued up, and may not have been such a success for Banggood, still steady sellers. Perhaps they forget their heritage.
The original MF01 would also have been unacceptable if glued up. Driver failures in MK1 only satisfactorily resolved for some by gutting it and retro-fitting a BLF based design at additional cost, poor assembly in MK2, stripped threads, loose stripped MCPCB securing screws rattling about inside the head, inadequate thermal compound, I’d have been stuck if I couldn’t correct mine myself, it would have been returned and if necessary Paypal involved if not satisfied, which would cost the supplier far more.
I understand the temptation to glue things up to discourage meddling, but reject it. Particularly on enthusiast torches, where the supplier seems to have forgotten that some of these things owe a lot to our input and improvements. And buying power.
Frankly, if the next-gen. MF01, for example, is glued up I would see that as a disrespectful, arrogant, ungrateful kick in the teeth to us. They should accept that nothing is perfect, and that some wish to make their own changes, or just fix simple problems ourselves. Even just to inspect, and satisfy ourselves that the assembly is well done.
My attitude might be different if Bangoood’s responsiveness to correcting problems of their own making was good. But it is not, far from it.