Actually the OGL states that they can revoke your use of the OGL.
I think they would have a hard time pulling it off. But the clause exists to allow them to pull some stunt.
Is it really so hard to quote from the actual license to make your point? Granted it is what the Pundit does but you don't have to follow his example.
If you had you would have realized that the license doesn't say what you just claimed.
12. Inability to Comply: If it is impossible for You to comply with any of the terms of this License with respect to some or all of the Open Game Content due to statute, judicial order, or governmental regulation then You may not Use any Open Game Material so affected.
13. Termination: This License will terminate automatically if You fail to comply with all terms herein and fail to cure such breach within 30 days of becoming aware of the breach. All sublicenses shall survive the termination of this License.
The terms you have to comply with are
#5, that what you are contributing as open content is your original content that you have full rights too.
#6, that you update the copyright notice correctly.
#7, that you don't use any content declared as product identity unless it is licensed separately. And you don't cite compatibility with any trademark without a license.
#8, that you clearly identify what is open content in your work.
This means that Wizards does not have any authority to revoke your use of anything they contribute as open content. The only discretion they have is to ignore a licensee failing to do #5, #6, #7, or #8. For example the hundreds of publishers that use a variant of
Any content derived from the SRD is open content the rest is declared as product identity.
Which in my view violates the letter and spirit of Section #8. But Wizards has ignored this for decades including publishers that just include the OGL but fail to include any declaration of any open content or product identity.
And finally to make this crystal fucking clear they explicitly say that is a perpetual license.
4. Grant and Consideration: In consideration for agreeing to use this License, the Contributors grant You a perpetual, worldwide, royalty-free, non-exclusive license with the exact terms of this License to Use, the Open Game Content.
All of this taken from the latest D&D 5e SRD
https://media.wizards.com/2016/downloads/SRD-OGL_V1.1.pdf