You are paying a fee for the logging archive Radu keeps. I don’t agree with it completely either but you are free to log the data yourself for indefinite periods.

I grab the CPM data from a model A and publish it to a mqtt topic. Pimatic automagically makes a graph of it. But you could just as well scrape the webpage of any of the Uradmonitor products and log or broadcast it in any way you want, CSV, mqtt, database…

I do find it a bit odd that the logged data on the website is declared to be under some copyright. That is like saying Sony owns the copyright to all the pictures I made with my A7ii camera.
I don’t mind that archives are kept and made accessible for a fee but I can also withhold the data by firewalling the the units I own and there will likely not be any consequence for that.