This is a very good question.
As it is currently built, to my opinion it is not.

Why?

1. Creators of Token :
   The fee that you need to pay at Steem-Engine to create token and Scot token are ENG... (token created by Steem-Engine team). So people who are putting in place these tokens don't even need to buy STEEM, they need to buy ENG which can be paid with STEEMP but also with other crypto like BTC via BTCP token and so on. Regarding SCOT tokens like PAL, LEO and so on, creators needs to hold ENG again instead of STEEM to allow all the functionnalities of the SCOT tokens. So again it is not creating any value for STEEM but only for ENG. So to resume the situation, instead of trying to give some value to STEEM by forcing people to buy and hold some STEEM to create all these tokens, Steem-Engine is focusing on increasing the value of their token ENG. It is smart for their business but not good or at least nothing positive for STEEM value...

2. Users of the Token:
   Regarding the users of the tokens, I would say it is neutral. Buyers need to import STEEM in the platform to have some STEEMP (but again they can do it also via other tokens). And when they want to take some benefits from their token, the will sell them against STEEMP, withdraw STEEMP in exchange of STEEM and sell the STEEM to take their profits (new decrease of value for STEEM).

So to resume the situation, the way it is built on STEEM-Engine won't give any value to the STEEM. They are focusing to the value of their ENG token (point that I can understand for their business). Let's hope SMT done by STEEMIT will focus on giving value to STEEM.