  Recently, a surprising low-temperature behavior has been revealed in a
two-leg ladder Ising model with trimer rungs (Weiguo Yin, arXiv:2006.08921).
Motivated by these findings, we study this model from another perspective and
demonstrate that the reported observations are related to a critical phenomenon
in the standard Ising chain. We also discuss a related curiosity, namely, the
emergence of a power-law behavior characterized by quasicritical exponents.
