New chains look good in early months but when more people use their chains, capacity to handle transactions will be overloaded and sooner or later we will see their weakness.
We will experience hiccups of new chains and more bad things. New chains also mean lack of testing and fighting against hack, compromise. You don't know when hacks will happen on new chains because their security is unknown.
They start by claiming their chains are good or bad and are created to provide smooth transactions, no congestion, no high fee. We see whar happpened with Solana, Polkadot and other new chains created last 3 years. They are not good as what they wanted and shilled to investors.
Bitcoin, Ethereum and Binance Smart Chain are best ones to use.
I didn't mean "new" chains as in chains are new, I meant new chains as in new to roobet. Adding a brand new chain to roobet but a chain that has been around for 5 years could work. Like imagine erc20 wasn't here, and you added it, that still works and it's fine.
I agree that brand new chains would be a trouble and there shouldn't really be a trouble with avoiding them, why would anyone want to add a chain that is causing trouble? But adding avax? ada? matic? dot? sol? tron? Those are all great for all websites and everyone should add them, btc+eth+bsc is already in most casinos and that should be default of any website to begin with as well. So, not "brand new" ones.