I'd appreciate feedback from anyone who has practical experience with cutting threads into bottom brackets before and after welding the connecting tubes. I know that in theory the welding heat can distort the bottom bracket (unround, misalignment). As far as I know in particular a lack of alignment of the threads on the drive side vs non drive side can cause creaking and the crank to not spin freely.

Anyone with experience how much cutting threads before vs after welding actually effects creaking and free crank spin (assuming one uses basic heat dissapation techniques)?

And does a tool like this https://ibb.co/bH07Z2S help to reliability tell whether drive side and non drive side threads are aligned / have been effected by the welding heat (aligned enough at least to not matter in practice)?

Context: It's a titanium frame.