There's zero evidence that the protests have had negative impact on support for Palestinians. The media is staunchly Zionist, you could make the case the protests have effectively counterbalanced their propaganda.
Of course there is [1][2]. (You see similar effects from e.g. bridge blocking in the broader protest literature.)
And again, what do you think happened in 2024 that caused support for Palestine per your source to drop?
> media is staunchly Zionist
The population has been broadly pro-Israel until very recently. The media market is, in the end, a market.
[1] https://today.yougov.com/politics/articles/49311-opinion-on-...
[2] https://www.insidehighered.com/news/quick-takes/2024/05/03/p...