anything which improves the inter island connectivity is good
Perhaps. But what demand is there for inter-island connectivity? People in Stornoway or Benbecula don't want to endure an extra stop in Skye en rt to Glasgow or Inverness in an even more tiddly aeroplane, and Skye has no connection whatever with the Inner Hebrides. Much of the connection between Skye and the Uists is simply that people have to travel through Skye to get to the ferry. If they were going by air instead, why would they go via Skye?
And then, given that the EU will shortly be out of the picture, where will the subsidy come from? The subsidy for the Oban air services is £1.5m a year.