>So what if you think their justification is weak?

"so what if you think a for-profit company is making an extraneous decision and wasting the time of their employees?"

you don't need to be a language fanboi to understand that superficially changing languages to meet the trend is wasteful/harmful/dangerous/stupid in nearly all cases when you already have a working (and bought) product -- if that is suspected here then it makes good sense to judge the decision-making capabilities of the organization.