It's not OSI because it places even more restrictions on usage than AGPL did, but this is very much matter of context and interpretation. If GNU would have created it it would have been welcomed by GNU-ers a lot better.
I sort of agree with their sentiment, but of course they are late to the have-cake-will-have-it-and-eaten-it-too party, as now AWS was able to fork the last AGPL-ed version and be done with it.