To be fair, that's not that new. She already focussed 99% on time trials before the Olympics and the Olympic time trial was her main career goal, but something about no Austrian quota there and a quota in the road race led to her doing only the road race. She's not made a secret (even before the Olympics) out of simply being very uncomfortable with riding in a peloton, which is why she didn't do a ton of road races in the first place.
She had six international competitions in 2019: five time trials and one road race, which was the Austrian national championships she won and in which she probably didn't spend much time - if any at all - in a large group. Last year she had two time trials, a 7-day stage race, another time trial and one more road race and before Tokyo she only had the Austrian champs (ITT and road race).
It's not new, and she's not making a secret out of why it is.