I don't think it's weird. I think it is telling, and reinforces the belief of many who thought Portnoy was behind that silly rule that stopped Myung from contributing lyrics. If it is true, and Myung lyrics do appear on the next album, I think it is more than reasonable to assume this.
I don't think it's appropriate to
assume anything. The entire band dynamic has changed now and they've lost one of their main lyric contributors. Plus, months and months ago, before MP left, Myung had confirmed in an interview that he was going to contribute lyrics again.
I'm not saying it's not possible, but Myung contributing lyrics when he had already said that he intended to do so doesn't change a thing about whether we can assume it to be true or not.
We already have two threads where this has been brought up and another thread (DT11 speculations) that could easily be used for this as well. This thread is pretty pointless imo.
Actually, unlike most of Aniland's threads, this is something definitely worth discussing.