Laners Be Like

He isn't entirely wrong tho, the tower makes them feel safe, which makes for a particularly easy dive, assuming they aren't

I don't know about your sever, but on EuW. I usually coordinate very well with my junglers assuming they main jungle (or they main the role i'm playing now).

sure they are. the tank just has to ping "on my way" and then dive

At worst its a 1 for 1, in case of a counter jungle. Since you are basically killing the opponent in 1-2 abilities of yours and 1-2 of your top/mid laner. Leaving the enemy team a window of less than 3 seconds to act upon it. So, if the counter gank is perfect, its gona be a 1 for 1. And if its not, then its a free kill.

Again, its more easy to tower dive someone on low HP than to gank them in lane, especially if the wave is pushing towards them (even slowly). The only other way this happens is if the way is pushing towards your laner, which is a good oportunity for freeze. HOWEVER, especially in early game, trades involve minion damage a lot. So, if your laner (top or mid) is winning their trades, there's a HUGE posibility that the wave will be pushing against the enemy and they will even have to oportunity to freeze it near their tower.

At which point depending on the enemy's hp (if low enough to kill in 4 abilities). Pushing the wave and tower diving together with your jungler is the best course of action. Ofc, you must pay attention to the enemy jungler. BUT, if you provide no assistance to your laner (this includes using your trinket ward near their lane, etc) than is constantly pushing, they will usually get frustrated, go for risky plays and die.

In addition to this, especially in early game. The enemy jungler has to farm their jungle and has 2 other lanes to gank. If another lane of yours is pushing -> maybe they want to gank that, over the mid lane where their team mate has 20-30% hp. Tbh, when I jungle (even though I'm bad at the role). I generally refuse to gank lanes where my team mate barely has any hp left and the enemy has a lot. Because its a high chance of one of us dying regardless if the gank results in the enemy dying or not. Which, in most cases, its beneficial to the enemy.

Also, I've been tower dived a lot (that's how I die half of the time in laning phase). Be it a Fizz+Nocturne combo, a Rek'sai over the wall into a Lux snare or whatever else. A lot of times your enemy will over extend under their tower. But if you can kill them in 1-2 seconds, you can tower dive with ease and move on with a kill/assist under your name.