Do you think it has underperformed, or is it doing okay?
Mostly underperformed up to borderline okay performance. A lot of people who have little knowledge watch only the USD chart, which is wrong. Many people who got some ETH would have bought BTC instead if they didn't. If you look at the ETH/BTC chart it looks bad. It has bad performance even with all the lobbying and bribing that can come from a centralized project like ETH.
I disagree.
I was here when it first came out, even before the fork that happened which show ETH and ETC diverge their path. I can tell you that nobody thought it would be as big as it is today.
It was about 9 dollars when I first saw it, and I do regret not getting some, I wish I bought with all my money, but that is the old days and no need to keep regretting. So nobody assumed a 4k+ barrier would be broken when we were back at 9 dollar price.
All these "why isn't it 10k+" questions came in much later, when people saw the bull run it had in 2021.
What is there to disagree, just look at the chart against Bitcoin. For most of
its historythe time it has
underperformedunder-performed and it would be better had you bought Bitcoin instead. Meanwhile you support premining and centralization when you buy projects like ETH.
There were even talks of flipping bitcoin at some point, when you get that much confident with your investment, what seems like an unrealistic expectation, becomes an expectation.
Only idiots were fooled by this talk.

How do you feel about ETH’s 10th anniversary?
Do you think it has underperformed, or is it doing okay?
1. I feel nothing from ETH's 10th anniversary. There's nothing change happened from the blockchain for even more than 1 decade since it's launched.
2. No, I dont. I'd rate Ethereum is overrated with all of problems that never getting solved. Limited TPS, non sense fees, unlimited supply. I feel its current marketcap is overperformed compared to the its blockchain specification.
Agree, the new generation coins do everything that ETH does but so much better.