Because right now fiat value is all that matters.
As long as a coffee will cost 0.6 mBTC today and 0.3mBTC tomorrow nobody will care about what the price is in satoshi.
Well, in venezuela people are measuring food/groceries/.. in satoshis (or other cryptocurrencies).
These people don't care anymore wether some water costs 1 million bolivar or 2 million the next day. Their currency simply isn't worth anything anymore.
They are paying in satoshi equivalents. And they do not care what the FIAT equivalent is.
Let's not generalize the situation based on a shit-hole of a country

Some pools right now block any tx lower than 5sat/byte, that's barely 10 cents
Which pools do block transactions with a fee less than 5 sat/B ?
Most transactions in the last week were below 5 sat/B. So you are telling me that they do not include any transactions because the fee is 'too low' for them ?
[/quote]
F2Pool and ViaBtc are playing around with those, they seem to be dropping off the restrictions at x size of the mempool as I've experienced myself this, checking for block confirmation on my tx and they kept ignoring my tx at 2sat/b with blocks not full.
And it's not the first time, they did it in January and in March also, constantly.