They can, they have and they will again. As others have speculated, they may bring Kirk in for season 3, or spin off a Pike and Spock series on the Enterprise. If O'Brien saying the new holocomm on the USS Defiant can be ignored, or Harry Kim saying there were no holodecks in the 23rd century can too, not to mention Spock's saying cloaking devices were purely theoretical until "Balance of Terror", then any other lines can and will be ignored in order to tell whatever story the Disco producers want. It's just not very established Trek continuity of them.