Not being able to process information as quickly as we did before does not translate into being an asshole who is intolerant of new ideas and is averse to change and hates what young people are up to. Even if we get old and can’t read Internet as fast as we do now, we aren’t going to somehow be opposed to cyborg kids or whatever other crazy direction society goes.
People tend to conform to the ideology of their social circles. When you share culture with someone, you share space. You hang out. Previous generations were more socially isolated from each other because they were culturally isolated. In the 20th century each decade had its own cultural identity in terms of fashion, music, art. Starting in 2000, it’s a lot more blurry thanks to the Internet.
When everyone aged 10-50 is hanging together, playing Fornite together, playing Minecraft together, cosplaying together, enjoying anime, forming a community, they are sharing both culture and ideology. There used to be dividing lines of this nature, but from my perspective, whatever divisions there are among people younger than boomers are drawn along other axes.
As long as we continue to form inclusive communities that bring together people across generations in their shared love for whatever, we will also naturally share ideology. Non-Internet generations did not do that. They only hung with people their own age.
Add-on: Think about it. When I was a kid we played video games with other kids. To our parents, video games were stupid kids stuff. Now, new families, the whole family games together. The power of digital culture has created cross generational bonds and a more-united front against the olds.