People are just making unrealistic prediction about altcoins. Ethereum has not even hit $5k and people are predicting $100k. Even $10k is not anytime soon but years to come. Before Ethereum will hit 10k dollar, it will reach 15 years to come. Even bitcoin too is not possible in this year to hit $100k because the movement is very slow and it is not rising like before again. But we are still hoping to see it reach that price.
Before predicting any coin about its all-time high, we should first of all, get to know her last ATH before predicting a new ATH for said coin.
However, Ethereum's last ATH was $4860, predicting that Ethereum to reach $10k is not so bad that it can't happen in the bull run, since the $10k is not as far as thought from the last ATH.
The time i will be thinking that the 10k price tag would be impossible to reach, assuming the last ATH was below $2k but since it is above, I anticipate for $10k to be possible in the bull run, assuming bitcoin reaches $100k