I also take an angiotensin II receptor blocker and my experience has been similar. Additionally, I experience a perceived effect on stress levels as my pulse and blood pressure do not rise in stressful situations.
On the negative side, I definitely have a harder time reaching my maximum pulse when working out.
Counter argument: While I agree with your general sentiment, this will only take effect on larger sites and will lead to minors shifting to smaller, less moderated, and potentially more extreme content.