If you have to reverse engineer it to fix something that should be working that isn’t or to get it to interface with another program, as far as I read it it should be allowed. If it’s against their T&C they might be able to revoke the license or terminate the contract, but you wouldn’t have contravened copyright under these new rules so it would be harder to pursue legal action against you.

Example if someone is trying to get a game they purchased to work on Linux, then they can break or bypass the TPM, DRM, or anti-tamper if it won’t run on Linux because of it, or to debug or fix a crash. The most they could do in response is take away the thing you bought and go after you if you solicited tools to bypass the DRM. They also aren’t obligated to make it easy to bypass.