I wonder why non-English versions of Google are behind on this (I agree that they are), surely much of the Google search algorithm is language independent?
Less data available in smaller market for the algorithms to work with, noise vs. signal ratio.
And it’s a snow balling effect, they still need to provide results to users, and with more spammy websites in a market the average website can get away with more dodgy tactics.
I agree they have to make adjustments, however factors such as number of backlinks from high DA sites, user dwell time on page, schema markup, meta data structure, https, domain age, mobile friendliness, page speed etc. don't require an understanding of language.
