Author of that article is a left wing nut and he writes for a fake news website.
Law & Crime (formerly Law Newz) is founded and run by Dan Abrams, who is currently the Chief Legal Analyst for ABC News.
From the comment section:
LTC (R) Jim Hickman:
The bottom-line is LTC Vindman was a partisan Democrat at least as far back as 2012. So much so, junior officers & soldiers felt uncomfortable around him. This is not your professional, field-grade officer, who has the character & integrity to do the right thing. Do not let the uniform fool you...he is a political activist in uniform.