Yes, you can't publish DRM free on Amazon now, unless the buyer has a PW1 or older. Direct to App and any Kindle later than PW1 has always had DRM since 2019 (that's when KFX was backported to older Kindles).
We have removed all our ebooks from Amazon while we think about it. Apple also has always applied DRM. Kobo and Google Playbooks respect Publishers wishes on DRM. I don't know how Barnes & Noble works. Smashwords never had DRM, now part of Draft2Digital.
Publish on Smashwords (adds Apple, Barnes & Noble, Kobo etc and will add Amazon if account migrated to D2D) and on Google Playbooks. We used same epub upload for those and Amazon.
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