I don't see why it would not be. My argument is that you don't really need other people to "correct" your Latin as long as you do lots of reading at the same time you are using the language. You will notice your own mistakes, not all of them, but enough of them.
Basically would this make accessing the ancients even easier?
My experience with writing and speaking Ancient Greek is that it does not make reading Greek easy, or even all that much easier, but it makes reading Greek more COMFORTABLE. It makes the language seem something that is closer to you, not alien, and words and phrases, some words and phrases anyway, go more directly and more quickly into your brain. I guess that's what they mean by "internalization." Active use of an ancient language is not some magic bullet, but is something I would recommend.
Can I do it without devoting a ridiculous amount of time to it each day also?
Yes and no. Active use does take tons of time, but much of that time can be spent during dead periods. You can speak Latin to yourself while you are mowing the lawn or taking a walk or driving to the bank. You can translate a pop song in your head. You can write a quick story while you are waiting in a Dentist office.
What I'm talking about is not formal composition in using a book to produce English to Latin excersies. These to me are incredible tedious, although they probably are helpful. I'm talking about teaching yourself to speak Latin, first by writing it as much as possible, then by listening to audio as much as possible. (You should NEVER be washing dishes without having some Latin in the background. Make your own recordings.) Then by talking a lot to yourself.
At some point, you will want to get together with people and speak Latin. But there is lots of prep that you CAN and should do on your own.
οὐ μανθάνω γράφειν, ἀλλὰ γράφω τοῦ μαθεῖν.