Of course, the research is pointing towards aerosol as the vector to spread the virus, so masks and cleaning surfaces have always probably been useless (they stop droplets, not aerosols).
That is not what the evidence is saying at all.
The primary mechanism is still droplet spread which is why the evidence shows that distancing, masks and hand washing work.
Fomite spread which is spread through surfaces that infected people touch is rare but still occurs (usually because the virus does not survive long on these surfaces). So while cleaning surfaces might be useful to prevent that last few percentages of cases transmitted, it quickly has diminishing returns.
However there are instances where there is new evidence is about aerosol spread. And what we are finding is that it does occur, not as much as droplet spread but more than fomite spread and more than previously thought with more data. Things like singing, shouting, coughing - activities that make droplets travel further promote aerosol spread.
The hesitancy with classifying Covid19 an aerosol transmitted infection is that it increases the level of protection needed and the level of contact considered to be an at risk exposure. That would make the cost of prevention prohibitive when droplet protections have been shown to work very well for covid19, as long as you are aware they are not fool proof because of the small risk of aerosolization.