What on earth sort of a 'check ride' can a non-FI PPL holder possibly give? He/she is only permitted to fly private flights or non-remunerated flight instruction if his/her licence also includes a FI rating.
I can accept the concept of someone briefing another pilot on the vagaries of a specific aircraft's foibles - but as for conducting 'recency checks', that's very dubious. The P1C should be a CRI at the very least, I would reason...
On another score, it seems that there is the odd place where 'aerobatic experience' trial lessons are being conducted by FIs who haven't had their 'no aerobatic instruction' restrictions removed. That's possibly acceptable if it's a 'pleasure flight' being conducted by an AOC-holding commercial organisation with properly licensed pilots - but with enthusiastic and unqualified FIs at a basic RF/FTO? Definitely not!