They were dangerous then and they are still now gatecrasher, supporting the entire weight of one corner of your car on the threads of 4 bolts is not a good idea.
There is a reason no mount like this has ever had tuv approval, the design isn't safe, if those threads strip (which with constant adjustment they will eventually) the strut will go through the bonnet.

Great design for adjustability, ideal for testing different settings, bad idea for long term use.
I'm glad my comments were taken on board enough for an extra ring to be used but that doesn't change the fact itsonly the threads taking the full weight of that corner.

People should be aware of this when buying, stick em on a rally car for example and you'll be highly unlikely not to have a failure.