It was kinda embarrassing, but I also felt joy that there are actually people out there who look at my stuff. The job didn't fit, but it was still a good experience.
So yeah: Investing a few minutes in writing up a personal readme which gets shown on my gitlab was worth it. I can recommend!
Most interviewers will not discuss your public work because they want to be unbiased and have the same discussion with multiple candidates without any other factors other than your performance in the interview itself influencing their assessment. They are doing the right thing.
Where a portfolio can help you is in getting you from application to being invited to interview, which can be a challenge when there are many applications for a role.
In some cases it might also influence a hiring manager's or hiring committee's decision as a tie-breaker between you and another candidate who did just as well as you did in interview, but I believe that's less common.
Heck, as part of the most recent interview process I was asked to provide a code walkthrough of a part of a personal project of mine for two developers from the company I was interviewing for. It was fun actually.
I’ve never come across a candidate where anyone has dug into someone’s online presence prior to an interview.
And to be honest, I’d rather speak to the person that read something they wrote.
But again, that’s big corp so obviously other companies might do it differently.
Always had a really really difficult time with how to present “myself” on a personal website - too many sides (code, personal preferences, opinions, etc) in one place. But whatever just send it and own it I guess - am still content selective though.