but yes, I think they should in a limited sense.
Average scores over an escorts career can be, and probably are, meaningless on the whole. Appearance and performance changes over time, menu items change... Perhaps a rolling average of the past X number of review scores, or X years (2-3?) of reviews should be used for profile averages and rankings lists. Keep things up to date. OK, have an "all time" and "current" top 100 list. fine.
Perhaps limit reviews displayed in a profile based upon an initial search to those used in the calculation of the up-to-date average. Add an "archive" function to find older reviews by date range. Anyone who wants the current info can see it right away, quickly - and those who want to go deeper can still mine for their personal gold as they see fit.
I don't advocate for one second that old reviews be eliminated. Creating a persona resurrection cycle based upon review expiration dates is not good. There are hobbyists that believe a woman has a "best used by" date, I get it (don't personally agree) and the total number of reviews is relevant for them. It is also relevant for providers... you can see all of a hobbyists reviews and history just as well as he can see yours. If provider reviews and thus history expire, so would a hobbyists' review history.
I'll still get what I want from reviews, and when that falls short or I have a question I'll use PM or email to get the answer I want... from the provider I'm interested in directly, or from a past reviewer.
Armor on... go ahead and school me, guys!