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.
Maybe it meant the same to him as it does to you!