Lol thats brave on your part, given that a mistake can cost thousands and you have no accountability (punch!) from an LLM
In the US, all you need to work in tax prep is a high school diploma and most individuals are not worth the cost of an audit.
I wouldn't say it's particularly brave, in fact LLMs are probably better at identifying mistakes than most tax payers. The % of Americans using a CPA to file taxes is fairly small.
Your account has no accountability. Do your taxes wrong and the tax payer is liable.
Ask me how I know.