People complaining the loudest about "not OSI compliant" etc. are not complaining about the software being non-FOSS. They're complaining about non-FOSS software

People complaining the loudest about "not OSI compliant" etc. are not complaining about the software being non-FOSS. They're complaining about non-FOSS software masquerading as/lying about being FOSS. If the solution to making FOSS more competitive with non-FOSS is to make FOSS non-FOSS, well, that's not much of a solution.