Interesting. So Business Matters, owned by Capital Business Media and Richard Alvin—who has ties to Conservative governments, including advisory roles under both Thatcher and Cameron—runs a headline that implies impartiality in the IFS's work.
Yet, when you read the article, there's no evidence of wrongdoing or issues with the author's methods or findings. And those raising these concerns have also nothing to back them up, other than the fact the author and a government minister are friends.
Frankly, accusing a professional researcher of unethical behaviour based on nothing more than a government connection is a bit of a leap and a serious red flag. You have to wonder what the real motivation is to make such claims, especially when there appears to be no plan to take things further.
One sentence did stand out to me though:
"The Conservative Party is expected to use an Opposition Day debate to call for a deferral of the VAT policy until 2028 in areas where state schools are already nearing capacity."
So despite everything, it sounds like not even the Tories actually opposed the policy.