Is the Polar H10 ECG chest strap the «gold standard in science» for heart rate measurements as Rob ter Horst claims?

Rob ter Horst claim is in this: or in one of his other YouTube video reviews. His statements are based on the following paper: https://pubmed.ncbi.nlm.nih.gov/31004219/ Published in the Eur J Appl Physiol 2019. Is this a journal which accept almost every submission? The Journal of Meditation Research of the MRIS would not accept the above …