Nakanokalronin, you are incorrect in your assumption.
When the slide strips a round from the magazine, the round rises up from under the extractor and slides into place - the extractor hook does not get pushed outward around it.
The extractor rides forward with the slide (and cartridge rim) as the slide goes forward.
During recoil, the extractor is already in contact with the rim.
So, no, forcing the extractor around the rim is not "a normal action that happens every time you fire a shot".
If you search, you can probably find some cutaway demo videos of the process.