In an ideal world there would be no props and every single route would be served every ten minutes. However, there is a reason that this is not the case and it's called economics.
You mention that pax don't like JZ
's F50. It doesn't say anywhere in the article that Swedjet will use jet-a/c, except maybe in their name...
I can't see where Swedjet will find enough pax to fill 6x daily flights to CPH
. SAS struggled some time ago and left the route for Skyways, who now flies 4x daily. Even if Swedjet took all of Skyways' pax they would still need around 50% more pax to have the same load factor, with similarly sized planes.
On top of this Swedjet would have to fight with an airline where you can earn EuroBonus points and has close ties to SAS, the main operator at CPH
As a side note, I believe the airline who wanted to compete with Skyways a year or two ago was WaltAir. They wanted to source 2 ERJ-145 and compete head-to-head with Skyways. However, that never materialized.
Personally I highly doubt that this will become more than an airline mentioned in the news, but after the summer you're welcome to prove me wrong if they start flying to CPH