I agree with you completely. I'm a semi dedicated musician who is working in this direction. I play in a chamber orchestra and have put some thought into this. For string pieces it's just a simple matter of tuning down a bit. Not a problem. But organs, pianos, harpsichord, brass, wind ect are not easily tune-able to 432. So this is the reasoning behind why big music institutions would never switch.

But there is no reason why we can't create and perform music in whatever frequency we want. Other musicians I've talked to mentioned A444hz as another popular tuning back in the period. The only argument I've encountered (other then the obvious logistical nightmare involved producing non-tuneable instruments) is this math dilemma scholars like to throw at me about the space between notes. It doesn't make sense to them so they obfuscate.