We too have disabled AMP pages because we are unable to accurately track their performance via GA.
I’d be interested to see how HubSpot react to the recent news about the Google page experience update and this using AMP version for scoring. , https://www.seroundtable.com/google-page-experience-scores-amp-version-29630.html .
It would be great to have a section to adjust tracking based on Google best practice [UA] Measurement of Accelerated Mobile Pages (AMP) [Legacy] - Analytics Help