I beg to differ.
How many sim checks do you know of that use the old 200's these days?
I too did my MCC on the 732 at PARC, but Jet2, DHL, BACF, etc all use something a bit more modern.
If you are paying for a course on a level C or D sim, why not get the most out of it and give you a leg up for the next stage?
After all, you can ask the instructor to give you a JOC experience and hand fly with EFIS, it will just give you the ability to scan for information on screens that you maybe thankful for.
Having done the MCC on a classic and flown a modern EFIS on line for thousands of hours, I just know it would have been easier - even the 757 with a bit of both.
Revision before the course is the secret.