Is Pokémon Masters pay to win?
In the past I have defended masters to a degree, as while there is a pay to win aspect with spending money in theory leading to players getting better characters and making it easier to power up the characters they have, it does do a surprisingly good job at not making spending money necessary.
What does 6 star ex Tech do?
6★ EX sync pairs are now available! The ability to raise your sync pairs beyond 5 ★s to 6★ EX has been added! Raising a sync pair to 6★ EX will change the Trainer’s pose on the Edit Team screen and in the sync pair details, allow the Trainer to switch to their EX Style, and also upgrade their sync moves!