Extracting the keys locked to an TPM is supposed to be impossible, so you do not need to worry about somebody stealing your keys.

TPM sniffing

• Far left / Pirates: Always vote for privacy.
• Greens: Almost always vote for privacy.
• Center Left: Often vote for privacy.
• Center Right/Right: Always vote against privacy.
• Far Right: Vote against privacy or usually just abstain from voting on important decisions.

Just as always with the right: Nothing but lies.

Source