I strongly believe so. Given its only utility as a low-class investment too and illicit trade payment method, how can it be moral? The substantial environmental toll and funding Chinese enterprises is not a positive thing either. I'd be happy if you prove me wrong.
1. Owning bitcoin doesn't encourage illicit trade. Cash is used for illicit trade, but it's not immoral to own cash.
2. Owning bitcoin incurs only the environmental toll for the initial transfer into your wallet. If the $0.50 of electricity used to validate your initial transfer bothers you, buy some carbon emissions to offset that. But you probably waste much more electricity leaving Halo on pause for 10 minutes while you grab a snack.
3. If you think Chinese enterprises are immoral (which I would love to hear your reasoning on if true), then don't buy bitcoin from a Chinese enterprise. They don't have a monopoly on the currency.
Also, what do you mean by "low-class investment"? Do you mean high risk? The definition of investment is: "a thing that is worth buying because it may be profitable or useful in the future."
Given the track record of Bitcoin, I would say that so far it has proven to be a very good investment for any who have bought it so far. It's hard to argue with history.
Or maybe you are claiming to have knowledge about why the years-long trend of bitcoin growth will cease soon? Has something fundamentally changed about it recently?