Yep, looks like. From another point of view, nobody can stop core teams of those projects or communities of those projects to maintain own bridge to Incognito.
Here is a quick guid on -> Maintaining your own bridge to Incognito. On early stages of those bridges it would be enough to play with trusted set up.
Anyone can kickstart own bridge to Cosmos, Polkadot, LBRY and pitch it to their communities to test the water )
Once we see demand on any of trusted bridges, we will be able to prioritize implementation fo trust-less set up for it.