Absolutely, but…
…all those "blabla"s need to be in elements of their own, not naked text. Something like:
[
{text: "blabla"},
{text: "text1", blur: true},
{text: "blabla..."},
{text: "text2", blur: true},
]
<span *ngFor="let chunk of chunks" [ngClass]="'blur': chunk.blur">{{chunk.text}}</span>