Do you mean the internet cache, just wondering cause CCleaner does not list temporary files specifically for Edge on my end. Although I think it's the same thing just worded differently.
It isn't normal that's for sure. I do a lot of browsing in Edge as well, but my internet cache rarely ever goes over a few megabytes, or at least that's what CCleaner says. I think there is a bug in Windows 10 in general related to this, as even disk cleanup will not clean temporary internet files or is not reading them properly. I have noticed in disk cleanup my temporary internet files there have been growing, about close to 100MB now. No matter how many times I run disk cleanup it will not show those files as cleaned. I also have the bug where CCleanup will skip cleaning Edge.
Sometimes I can get around it by only analyzing and then right clicking each Edge directory and cleaning them individually that way, but for the most part it will not clean it.
This is true, but you can turn all of this stuff off. Before you even install Windows 10 or during the upgrade process, it asks you all of this and what to allow given you did not choose to express install. If you choose customize instead, it will give you the choice to turn all of this off.
You can also do it within Windows 10. Go into settings, from the start menu, and go to privacy. You can turn it all off there. Reddit also has a detailed post about all the things you should turn off if you're concerned about your privacy in their Windows 10 section, and guides you through the process. It really isn't that hard, but I can see it being a problem for the typical computer user who doesn't read anything during the install process. Reddit also had a good community of techies who have dissected Windows and tracked all the information it is sending, if you are that concerned.