Earlier quoted context omitted.
Fully agree. Om this note, I had a brief discussion with an employer I collaborated with once, about some potential employees being forced to work in the open because they open sourced their work. I was terribly surprised to get no understanding that this could be perceived as a problem. Especially since work tasks may not be something you would want on your public record necessarily.
In this case, I would recommend that you get an employer-specific GitHub account, so you can compartmentalize it that way. A bit of a hassle, yes, but then, you're definitely not tying yourself in git history to that employer for your entire career.
That's of course a good solution. Thank you.