“he can’t possibly believe everything he claims to believe”, because you are “kofer” that a person can be “chored lidvar Hashem”, and REALLY seek to fulfill rotzon haBoreh, including the mandate and chiyuv min haTorah of קדש עצמך במותר לך, to refrain even from things that are technically muttar (aka chumros and seyogim).
You think everyone is like you, living in a self created frummie bubble filled with hot air of self rightouesness. Therefore you get bent out of shape whenever someone points out that you are breaching halacha according to some or even many shitos.
That pinprick bursts your bubble and the only way to restore your complacency in kiyum mitzvos is by making false claims and pointing that there are others that have shortcomings. You falsely claim to be more frum than they.
Your standard of frumkeit is: I am frum “enough” because others are less frum than me, look, they don’t do xyz and I-am-holier-than-they, Anochi, the great me.
You pat yourself on the beichel because you keep a few token chumros.
Meanwhile, justifying the worst aveiros of loshon hara, mitzi shem rah and rechilus (and machlokes and sinas chinom) by saying, “those guys do it on their blogs, so it’s a mitzva of nekama for me to do so” – even if it is a pure sheker, as confirmed. THERE ARE NO SUCH BLOGS!
The game is up. Korech also reached an end for his machlokes.