May I suggest it is perhaps a limitation of "modern" FMS software. If there was a 250kt/FL150 limitation for arrivals (as you'll seem to agree), the database coder has two options:
- to code it for the airport which means it will show up unnecessarily for departures, or
- not to code it which means it will not show for arrivals contrary to the AIP.
What would you do?
Either way, many call me a computer kid. Fine, as long as we agree that being a "happy magenta man" requires understanding that computers are never correct until cross-referenced otherwise.
If you don't agree with the FMS code, what stops you from flying the correct profile?
If you don't agree with the FMS code, what justification you have to follow it instead of flying the correct profile?
Sincerely,
FD (the un-real)