They are honestly comical now instead of scary. At times they whack at your ankles until you notice them but all the zeds do that. Its funny on horde nights because there is always a couple spiders jumping around in the background, sometimes over and over as they can't get their pathing right so they just just spam leap and we start laughing at them. Honestly a mod needs to make them look like kangaroo zeds, be more accurate, and change the noise.
Before they would crawl up everything and screw up your base plans unless you knew they were a thing and remember to build it into your plans. They were an actual threat. Not sure why the devs decided to turn them into something so silly.