That sounds sort of noble, perhaps, but that's not how it works. Ignoring the fact that there is more than enough time in childhood for what you propose, reading, and much else.

Cognitive development is a process, of which language development and reading are a major subset. That development is always in-process.

The longer that one waits to start children down the path of language development skills, the lesser the chance that they will be able to fully develop their potential for that skill.

For example if you speak to a child less than you should or could, that child's language and overall cognitive development will be significantly disadvantaged when compared to a child with similar potential but much more attentive parents.

Think of a disability where one hears less language, and then research developmental outcomes for that group.

The same carries over to reading skill. The earlier that you start, and the more that they get, both listening and eventually reading themselves, the much higher likelihood that they will become an advanced reader.

You aren't jamming them up. You are giving them an immense lifelong gift. In addition to attending to a significant cognitive need.

And again, plenty of children raised with reading are also commonly taught be adept at technical and manual skills. Most people would choose a smarter mechanic, who among other things has the proficiency to read complex documentation.

Kids want to be read stories at night. Its a major developmental need. You should read stories to your kids. Then, when they are ready, you should buy them simple books like comics. Then age appropriate books as they are ready. Content doesn't matter so much. It's mostly the volume of reading that matters. Every little bit helps.