They give us the time of alright, they just don't like to refer to Dash directly for fear of their appraisals being seen as potentially inflammatory.

Some of them belong to a school of thought (a flawed one IMO) that altcoins "detract" from bitcoin's network effect. Other vocabulary sich as "dilute" is often used. In fact, the reality is that cryptocurrency is not a natural monopoly as Andreas Antonopolis has often pointed out in his talks. Far from "diluting its network effect", the alt coin sphere, IMO, has massively contributed to the bitcoin ecosystem and enhanced it's reach like the slopes of a high mountain. For that matter you could reasonably measure bitcoin's marketcap as the sum of its own plus that of all altcoins, since they are all priced in bitcoin, it being the accepted reserve of the entire cryptocurrency economy.

See: 6:15
https://www.blockstream.com/developers/

7:01..."If you start up new cryptocurrencies all the time, all your doing is fragmenting the network effect". (No - you're enhancing the network effect. Consolidation comes with the maturation of this process, not from creating technically engineered monopolies   <-- (I like GM's presentations very much and he's got some fantastic insights but there are also quite a few big assumptions mixed in there IMO)

b.t.w. in this presentation, we're known as "the compatible group"   ....at least in technical approach although I think in this case he's more specifically referring to anonymity solutions on the Bitcoin network like 3rd party mixing services etc.

See 41:00:

https://www.blockstream.com/developers/

(Confidential transactions section starts at 35:07)