To limit opportunities for shorts to use your CYDY shares for manipulation, they need to be in a cash account. The fine print of the margin agreement allows most brokers to loan shares held in the margin account to shorts. If you want or need to keep a margin account you can simply open a cash account and have your CYDY shares transferred to the cash account and avoid them being loaned to shorts.

From sunray3's previous post:

Can Brokers Lend Shares from a Cash Account?
➡️ By default: No.
If you're in a standard cash account and you haven’t agreed to anything else, your broker cannot lend out your shares. That’s because:

You're not using margin

You're holding fully paid securities

Brokers can’t “hypothecate” your shares without explicit permission

BUT...

➡️ If you opt into a Fully Paid Lending Program (FPLP): Yes.
Many brokers now offer these programs even to cash account holders, where:

You voluntarily allow them to loan your fully paid shares

They pay you a portion of the interest they earn from borrowers

You retain ownership, but lose voting rights and immediate recall

Examples of brokers offering this:

Fidelity's “Fully Paid Lending Program”

E*TRADE's “Fully Paid Lending Income Program”

Charles Schwab's “Securities Lending Fully Paid Program”

Interactive Brokers' “Stock Yield Enhancement Program”

So in those cases, yes, a cash account can be a source of loaned shares — but only with your consent.