These are all just market rumours and speculation as usual. TSMC is ASML's biggest customer and has more than 50% of the global installed base of EUV machines. They always planned to take a high NA machine as early as possible for R&D purposes, they're just not buying in volume yet that's all. The timing and/or cost does not work for their current nodes up to A16. The next full node shrink, which is due in 2028 I think, may use high NA but TSMC haven't decided yet.