How to rename the comment or verbatim environment?

Question

Based on the question How to rename or "copy" a latex environment I am tried to rename the comment environment to myenvironment:

\documentclass[10pt,a5paper,twoside]{memoir}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\usepackage[brazil]{babel}
\usepackage[showframe,pass]{geometry}

\usepackage{comment}

\makeatletter

% \newenvironment{myenvironment}{\comment}{\endcomment}

\let\myenvironment\comment
\let\endmyenvironment\endcomment

\makeatother

\begin{document}

    This is normal text.

\begin{myenvironment}

         How to make this environment be \bfseries{verbatim}?

\end{myenvironment}

\end{document}

However it do the error:

Excluding 'comment' comment.)
Runaway argument?
! File ended while scanning use of \next.
<inserted text> 
                \par 
<*> ./test2.tex

I suspect you have forgotten a `}', causing me
to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.

! Emergency stop.
<*> ./test2.tex

Answer 1

The question code was badly tested:

1. The comment environment can be "renamed" by creating new environment version with its macro \excludecomment{myenvironment}
2. The verbatim environment accepted correctly to be renamed with \let\myotherenvironment\verbatim and \let\endmyotherenvironment\endverbatim:

Example:

\documentclass[10pt,a5paper,twoside]{memoir}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\usepackage[brazil]{babel}
\usepackage[showframe,pass]{geometry}

\usepackage{lmodern}
\usepackage{comment}

% How to rename an existing command?
% https://tex.stackexchange.com/questions/193379/how-to-rename-an-existing-command
\newcommand{\supertiny}{\fontsize{2pt}{2.5pt}\selectfont}

\excludecomment{myenvironment}
\newenvironment{myotherenvironment}{\verbatim\supertiny}{\normalfont\endverbatim}

\begin{document}
     This is normal text.

\begin{myenvironment}
     How to make this environment be a comment?
\end{myenvironment}

\begin{myotherenvironment}
     How to make this environment be {\bfseries verbatim}?
\end{myotherenvironment}

\end{document}