Just as a historical data point: for a long time blogspot was completely broken if you blocked trackers (including Google analytics). The pages simply wouldn't load beyond the placeholder "gears in a box" emblem.

My hypothesis at the time was that Google had deliberately introduced changes to GA that made it far too convenient for sites to depend on on ga.js for providing [something in the path of] actual page rendering logic. And so for a number of years any URL pointing to blogspot was as good as dead to me.

The asinine behaviour has since been fixed. I can only assume the pageview numbers with intentionally parasitic ga.js were going down and couldn't be misattributed any longer.