I looked at this, but there isn't much here of actual evidence to render Physics Essays as not being credible. Again, the author of this piece first sets up a straw-man and then proceeds to knock it down with denigrating labels. All he really does is to point to another discussion which talks about it as "whether it "counts" as a journal", but doesn't actually present any real facts. Then he goes on to say that: "I went ahead and made a Physics Essays article", but when you click on his link to his so-called 'article', you only find a brief description of Physics Essays, accompanied by the statement that:
The journal was abstracted in
Current Contents/Physical, Chemical, and Earth Sciences and the
Science Citation Index Expanded until it was dropped in 2015.
[1] After re-evaluation, it is now included in the Emerging Sources Citation Index (ESCI), a new edition of the Web of Science.
[2]
The journal is abstracted and indexed in:
So Physics Essays was dropped at one point, but then re-instated in the the publications mentioned. That means it was found to be a credible publication.