You must have got your answer by now. Its the second Bullish run in last 6 monhs by Eth. Agree or not, crypto market is mostly controlled by BTC price and Eth can cross its ATH of 4100$ only if BTC continued its journey above 50k$.
I dont recommend buying ETH at such high price (close to ATH). If someone buys at such high price, chances are he may struck for long period.
Buying on ATH was a mistake even though what they bought was the best coin of all time, because everyone who profited on a good coin, they always bought at the lowest price or at half the price of ATH a coin has ever achieved