>Does this mean thath the polls for this presidential election are even more wrong than they were in 2016?

Yes.

The final Democracy Institute poll (https://www.express.co.uk/news/world/1354506/us-election-202...) that came out Saturday predicts a Trump victory contrary to most other polls, because it found that 79% of Trump voters do not tell others that they support him, while only 21% of Biden voters are shy.

USC's poll predicts a Biden victory, but when experimental questions are asked to figure out how those polled really feel, it forecasts a Trump win (https://dornsife.usc.edu/news/stories/3338/experimental-poll...).