He probably means fine in the long term. Nobody laments the loss of farm laboring or a coal mining jobs now that they are (mostly) gone. In fact the farm jobs that haven't been mechanised yet (picking apples etc.) are mostly done by immigrants with no other options.

I did apple pruning one hot summer. Trust me, nobody will miss that job when machines take over.

Tell that to the coal mining communities that were affected by the closing of coal mines by Thatcher in the 80s. From the reduced expectations of the multi-generationally unemployed, to the social isolation that a lack of community services brings, to the paucity of opportunities for both young people and those who want to change career. 40 years later those communities are still dealing with the consequences of these actions.

How many young people living there do you think want to get a job in a coal mine?

One thought is that, say, in semi-utopian world robots do infrastructure, farms, mining and even building houses. In that world, basic necessities will become much more cheaper and it might be even possible to institute universal basic income. In fact, I think this is the only few scenarios where UBI can actually become practical without causing inflation. Second point is our economy is slowly but steadily drifting away from these basic necessity jobs to entertainment, entrepreneurship, online services and finance. With UBI in hand, it might be more easier to pursue these high paying jobs. About 100 years down the line, we should expect people to work on more full filling jobs than bagging the grocery, assembling phones or bringing cooked dishes to people.

You can research theoretical physics your whole life without worrying about putting a food on the table.

Some people don't seem to realize there is a limit to how much of added value a low skilled person can bring to the market. Plenty of people are essentially unable to contribute anything more complicated than their muscle power, others can contribute vision and recognition (professional drivers) - and this goes on and on in a continuum. There already is a class of people - low skilled, low IQ, poor mental health - that are essentially unemployable unless you need to dig trenches by hand. And the bar will keep rising and rising.

Prices for the goods and services produced by robots will go down. Meaning you will afford more goods and services.

A lot of liquidity and money in the market. Anything that has a breath of possibility will be funded.