Long pronounced words and "conversation" style sentences

I have two questions.

Is it good to have sentences that pronounce words longer?
It's common in casual conversation. For example, in Japanese, such as

Sometimes I see "conversation" style sentences in collector. For example,

It's an inappropriate sentence for "single" speaker, I think. Or does it not matter?

Re: Post #36

Ah, Thanks @Adrijaned!

No problem for the speech algorithm. So, does that mean that the sentence can be used for Common Voice, I can give it a thumbs up in the review?
I rejected some of it... I should have asked the question sooner.

In the above example, that means it doesn't matter if it's two sentences.

There are many sentences like that in Japanese language collector and source text.