Now, about the last previous guy to build something at Temple Mount ~ wasn't that Herod the Great? He wasn't exactly Jewish either ~ or are we now to count Herod among the Jews.
There's now a building there over the site of the altar and I believe that building is about 1300 years old ~ which is really old as buildings go.
The general populace was probably replete with ignorance, but those who built the temple must have known what they were doing. What holier site is there for Jews? None. Am I making assumptions? Probably, but I would need to be convinced otherwise if they’re wrong. It still doesn’t change my opinion that this is a Jewish holy site, not a Muslim one. Jerusalam isn’t even mentioned in the Quran.