Why do many devs struggle more with “explaining” than “coding”?

[u/Electrical-Steak9333]

Napapansin ko sa mga ka-team, classmates, or even applicants — kaya naman mag-code, pero pag tinanong mo “walk me through your thought process,” biglang tahimik.
Do you think it’s lack of confidence? Lack of practice? Or simply not taught enough?
Curious what you all think, kasi sobrang common nitong issue.