For Ostheer, maybe, but if you have an OKW team mate giving him the weapons is probably for the best considering OKW units tend to get more accuracy from vet than normal units do. Also when recrewing weapons doing it with Ostruppen isn't as good as it used to be anymore since Ostruppen retain their 25% received accuracy when they recrew something.
If you want to recrew a weapon, do it with Sturms who are cheaper and faster to reinforce now and come with some nice received accuracy of .87 natively.
Your team weapons should never be directly taking damage from enemy soldiers, that's why you have ostruppen in front. You will take losses on your crews, but it will be from indirect fire, which is unaffected by received accuracy of models. This is where ostruppen with less reinforce cost and time are the better choice.
If you want to try to poke holes in the guide, ask me on steam. This section is for people to ask specific questions.