TDA/ToS and investing in SWVXX for the interest rate

I have cash left in my account pending a buying opportunity.

i recently learned that i can invest in SWVXX to gain some interest.

I currently use Ally for majority of my money in a CD. in addition, to my understanding, Fidelity lets you keep money directly in their money market fund to keep cash on hand while earning interest automatically.

But im confused on how SWVXX works within ToS. for example, it has this quip

https://imgur.com/a/CZbQr8g

basically it says its not:

1. FDIC insured

2. You could lose money by investing in a money market fund

3. it aims to preserve the fund at $1 per share, but not guaranteed.

and more.

what am i missing with SWVXX?

also, will it be treated as a cash position basically?

I also found out that i cant buy/sell mutual funds on mobile….