There's inherently wrong with wanting to sell quickly. If grandma died, leaving me her house 3,000 miles away from where I live, the last thing I'd want to be saddled with is trying to sell it. I know nothing about selling (or owning) a house, the real estate market in that area, etc. A fair enough price ASAP is what I'd be looking for.
Also, real estate agents are just as incentivized to sell the property as quickly as possible. Selling a property at say $1M in one week (3k commission) > 1.05M in three weeks (only $150 more for two more weeks of work).
I wish real estate agents commissions where tiered. 1% for selling at market rate but 10% for anything over the market.
Agents are not free! Around where I live, you can expect to pay 3% to each of the two agents involved. Selling the house for 5% more doesn't help you if you have to give 6% of the sales price to the agents. I wonder how much of what Opendoor is trying to achieve involves removing or reducing the agent involvement.