Mini PC such as Raspberry Pi 3B will struggle since they have small RAM.
It's no problem if most of people who run full nodes can afford better computer to run full nodes.
RaspPi users can fuck right off.
If you want to be an integral part of the most significant advance in financial technology since the 1400's, use a real machine. Don't cripple the network just because your cheap ass doesn't want to meet the required expenditure.
That is a compelling study and I'm definitely concerned about centralisation.
That is an ancient study built upon faulty premise.