Nom, you’re completely off about zecharya frankel. He was put in cherem. His books say open kefirah, that the tannaim made psakim due to personal bias and societal influence.
It’s not how you “interpret” his words. He was a complete apikores; rav hirsch said so many times. I don’t know why you have a soft spot for maskilim, but it’s not the first time you’ve said completely demonstrably wrong statements about them.