Is it okay to simply switch off an external hard drive with a power supply that is attached to a power strip?

I have an external hard drive that is powered by its own power supply on my laptop. The printer and a lamp also hang on this connector strip. When I'm done on the computer, I just turn off the power strip to save power. Then it clicks briefly on the external hard drive. Do I harm the hard drive with this procedure or do the modern hard drives survive this sudden power failure without damage? Please give a technical explanation… If this procedure is not without problems, I would like advice on how to quickly turn everything off. The hard drive itself has no switch

Yes, they will survive that. How else do you want to identify them?

For the time being, I would always remove the data carrier safely, so that the OS receives the message that it can now be disconnected. This will move the read head to the off position and you can then pull the plug.

Otherwise the read head may hover over the disc and this is not a good thing.

I do not turn off my HDD, it consumes minimal electricity…

This is not a problem. I'm more concerned with the printer, or rather the ink. Because every time the printer gets power after a voltage cut, the head is rinsed. Because the printer just doesn't know how long the sauce has dried in his head.