While it is very difficult to time the market, yes Ethereum is still undervalued compared to Bitcoin.
According to what I understand, institutional money is pouring into BTC as well as ETH.
So its a good time to buy and hold for long term
While it may not be looking like it is too high, I agree that people are looking a way out of bitcoin, they are looking into finding something better, which is what I think ETH could be for everyone.
Bitcoin is already at 40k price, and how much can you increase it? Can you make it 80k? Maybe, but that would be only double. Whereas ethereum is only at 1.2k and the marketcap is 6 times smaller than bitcoin right now, I am not saying ETH will go above bitcoin because that would be very hard, but I can see it going 5x higher when bitcoin goes only double. In that situation bitcoin will be 1.5 trillion dollar cap, whereas eth will only be 600 billion dollars, so the gap will even grow, but the profit you make will increase. This is why I sense that ethereum could make a bigger return on investment for people who invest to it compared to bitcoin investment.