Probably the worst advice that can be given.

There is no doubt that SvelteJS is more simple to use, but the translation to imperative, and the resulting component, is not as easy to predict as it seems. SvelteJS is not able to detect correctly changes in some cases. When this happens, the state can be corrupted and views are not updated correctly. This issue raises so many concerns that it is difficult to justify any project in SvelteJS, like in the old days with VueJS. (more here)

Demo:

SvelteJS failing to synchronize state