Try buying any of those in Brazil or non US/UK/EU countries and you’re going to have tons of fun with import taxes and shipping.
Suddenly, a cheap device costs more than a flagship iPhone or android with none of their benefits except the intangible freedom.
One of the best purchases I ever made was a le eco le pro 3 phone once the company went bankrupt for half the retail price 5 years ago. Bought it because it already had LineageOS support. Today it runs Lineage OS 18.1 (android 11) like a champ, it can be make to run bank apps (passing safetynet) if I want to. Still lineage OS is not a silver bullet you either need to get lucky and pick a phone with a big enough following that volunteer devs will support or scout XDA threads in order to identify those phones before purchasing.