Because of all innovation is happening on Ethereum, so yes I don't want to deal with the UX difficulty of using another chain. Also I wouldn't want to invest (both time and $) into a project on a 2nd rate platform. Not to mention it doesn't reflect well on the project to not consider the network effect nor the planned L2 solutions that are here to address scalability. I highly recommend looking into Optimism. I'm not sure what the difference of AE and ETH EVM is (forked?), but I know that if you have a project in Solidity then you can launch on Optimism with little to no changes (just use their compiler).