I can't convince you how to pronounce my own language, that's okay.
I've watched Brazillian TV my whole life, I talk to Brazillians all the time, and I've never percieved their "R"s as the English "H" - so cannot be not the "standard pronunciation of R in most parts of Brazil".
The Wikipedia page clearly states that the /ʁ/ pronunciation is the most correct, whether you are in Europe, in Brazil, or in Africa. My grandparents roll their Rs much more than I do, in the end of the day it's an R.
Imagine and English teacher saying to her Portuguese students: the "th" sound doesn't exist in our language, but some English-speakers say it as "d" so let's take that pronounciation as our standard.
spring, isla, sophie, embla-jane, zephyra, vita, clementine & brice, remi, archer, louis, evan, knox, valentine, lucan, storm, henry-john.