"The winshield is certified for a 250 kt speed ". Not true. There are some tests only. Far for being "certified".
Birds can be dangerous even at 190kt as USAIR learnt in January.
"No speed restrictions" climbs and arrivals are done thousands of times a day worldwide, saving tons of fuel and carbon out on the atmosphere.
Nothing about pissing in pants or innerently dangerous about flying few minutes at more than 250 kt.
To be stabilized on the approach have nothing to do about what speed you're coming. It's just a matter of planning and airmanship.
There's a lot of hysteria about 250 kt speed limit on training centers.
