It doesn't seem that clear to me with certainty. From another point of view, chaining functions is normal, but using methods could be considered to be an obscure conflation of function calls, postfix syntax, and single-dispatch mechanisms. If you want to use an object with additional functionality, you would have to revert to ordinary functions, or you will be tempted to monkey patching. It seems, some things do not fit together very well. What should be the right view? Of course, the one that provides the most damage mitigation, or to put it more kindly, the one that seems the most constructive at the moment. At some point, however, one may reach a dead end, or a local optimum, whichever way you want to look at it.