I think these mentioned video plattforms also need to really consider embedding and sharing improvements. I do not use DTube merely for the fact that they cannot Embed videos into other posts. It might be a small point, but it is serious for me.
It is possible to embed DTube videos.
You can generate the embed link with this format:
https://emb.d.tube/#!/author/permlink/autoplay/branding
For example, if the video URL is
https://d.tube/#!/v/techcoderx/QmcMm92bxgRHbDdMsZDANyvQNf9328covEZ1YZF47L2UcM
then the embed link (with autoplay and without logo) would be
https://emb.d.tube/#!/techcoderx/QmcMm92bxgRHbDdMsZDANyvQNf9328covEZ1YZF47L2UcM/true/true