Dtube isn't a hive video platform. It used to be on the steem blockchain but now it's on neither steem nor hive. So using dtube would be no different to using YouTube.

In my whole time on both steem and hive, I have never before this been treated like my posts aren't part of the community because they include my YouTube videos. Including my YouTube videos in my posts has always been acceptable.

Whether you curate posts with youtube videos or not is up to you, but my posts with my videos are part of the community, and my videos being on a different platform does not change this.