That statement is a lie. It's a sin for a Christian to tell a lie.
Indeed the latter is true, but the burden is upon you as the accuser to establish that it is. Saying they follow God is meaningless, as to do so presumes He has made His will known, and what RCs follow as that source is the issue. Either RCs follow Scripture of another source first, or they follow what their church says first.
According to papal teaching, is the one duty for Catholics to follow the RC pastors as docile sheep?
Should Church law be held as the supreme Law?
Can one assuredly know what Scripture and tradition consist of and mean apart from faith that the instruments and stewards of Divine revelation is the trustworthy authoritative source on that?
What is the basis for RC assurance that Catholic teaching is correct: that of the degree of evidential warrant or the premise of ensured magisterial veracity?
Yes!
Canon 752: “While the assent of faith is not required, a religious submission of intellect and will is to be given to any doctrine which either the Supreme Pontiff or the College of Bishops, exercising their authentic Magisterium, declare upon a matter of faith or morals, even though they do not intend to proclaim that doctrine by definitive act. Christ's faithful are therefore to ensure that they avoid whatever does not accord with that doctrine.”
Canon 753: “While not infallible in their teaching, [Catholic bishops] are the authentic instructors and teachers of the faith for Christ's faithful entrusted to their care. The faithful are bound to adhere, with a religious submission of mind, to this authentic Magisterium of their Bishops.”