It states that Federal can be e-filed, but state cannot. The IRS confirms this:
Can I file my amended return electronically?
Yes. If you need to amend your 2020, 2021 or 2022 Forms 1040 or 1040-SR you can now file Form 1040-X, Amended U.S. Individual Income Tax Return electronically using available tax software products.
Additionally, amended Form 1040-NR and amended Form 1040-SS/PR can now be filed electronically for tax year 2021 and 2022.
Amended Return Frequently Asked Questions | Internal Revenue Service (irs.gov)
