whoever you choose do not have McDonalds employee's write them, they have lawyers, teams of lawyers who write them, review them, pass them around and then test them to ensure their ability to plug and play does not affect their validity.
No. That is not how that works based on the employment ads I've seen. You have to understand when using the DIY services that it is DIY. You are taking on the responsibility of being the lawyer. Just like you couldn't sue Home Depot if you butchered a firearm with a Dremel tool you bought there, you can't sue LegalZoom if you mess up your estate with a DIY will or trust.
Businesses that offer legal forms and DIY "legal services" #1 interest is in limiting their liability. They don't have law licenses to lose or a State Bar they are accountable to. They make their money on volume so their intent is to draft a single form that will cover as many people as possible and sell that at a lower cost than a lawyer (who has student loans, continuing education, state bar fees, law library costs on top of normal small business costs) can compete with.
There is nothing wrong with that - and it is a huge benefit to people who need something, even just a broadly drafted one-size-fits-all legal document and would otherwise get nothing because they can't afford a lawyer. But those people are taking on the responsibility of being their own lawyer. If something goes wrong, the person to blame is in the mirror - not at LegalZoom,
To use an analogy, some people are perfectly capable of running wire and rewiring their own home electricity. Some aren't. Some people are perfectly capable of being their own lawyer. Some aren't. In either scenario, if you start thinking "What the heck am I doing here?" then seeking professional advice is probably a good instinct.
The thread stickied at the top of this forum can help you figure out whether you are a good candidate for DIY Trusts or not.