Just wanted a diesel (crushers). This is why the forum is here, so other people can learn.
Don't take it too hard. For Crushers, his hate on the 2LTE is very personal. He's a good guy with lots of know how but a bit short on diplomacy.
But his advice is usually sound but often bitter medicine. If you really want a Toyota diesel 4x4, pop a 22RE back in your old truck. Sell it and buy a decent 25 year old JDM or Australian Land Cruiser. It'll cost you some decent coin but it will likely be cheaper than a more difficult engine swap in the long run. You could also consider buying a rust free FJ60/62 in the US and swapping in a JDM 12HT. Best thing is to buy a half-cut JDM so you have everything you will need for the swap.

Go the 2lte!