How good do you think you are at verbalizing while interviewing? Even if you can't get question X actually finished/correct, you can get a lot of credit by having an easy-to-follow thought process that shows some directional correctness or creative problem solving.
Yeah, it’s a big problem, thinking and speaking for me 2 separate processes, and I can express this signals from brain as a code, but when I start verbalising it, it blocks ability to write
You have to actually practice the skill of communicating while solving a problem.
I become a programmer for decreasing communication, but unfortunately you are right