xx5572,
There is indeed truth in the statement!
Opening and closing of cargo and passenger doors is type specific. If you're at Stansted, I assume you are talking about Easyjet and Airbus'? Boeing cargo doors open inwards, with much less of an issue in this respect - other than whacking your head off them....!
The Airbus - Procedures for opening cargo doors that are facing into wind, are that they cannot be opened when the mean wind speed is 40kts or greater, or there are reported gusts of 40kts or greater. There is also a limit for closing at 65kts - I think??
You can obviously reposition aircraft to sheltered stands, or turn the aircraft through 180deg where the limiting speed is increased, to 60kts from memory.
Another aspect to consider are the passenger doors. They have a higher limiting speed, but you may find if you use mobile steps, is that the limiting speed for safe use of those would be exceeded first!
Wind speeds of 40mph and 65mph, circa 56kt and 91kt respectively, seem extremely high. So much so, that I'd doubt much would be happening in the way of ramp activity!
Refer to your companies SOP's for high wind operations. High winds on the ramp are very, very dangerous.
Best of luck tomorrow!