I’m beyond the 100TT mark and have been for years, they check before you are signed off to take the aeroplane (an instructor has to sign you out) and if it’s even a day more than 28 it’s a no-go and a checkout needs to be done. I understand the reason for it as I wouldn’t want anyone taking a 700KB+ aeroplane who hasn’t left the ground in 3 months but I agree 28 days = an hours training is a little OTT.