Desabilitando o Form de comentário caso allowComments seja false

Eu implementei da seguinte maneira abaixo, alterando o texto da propriedade placeholder do Html.

Há alguma forma de implementar essa lógica direto no template?

@Input() allowComments: boolean
placeholder = 'Insert your comment here'
disabled: boolean = false

//codigo omitido

ngOnInit(): void {
        if(!this.allowComments) {
            this.placeholder = 'Commens disabled for this photo'
            this.disabled = true
        }
        this.comments$ = this.photoService.getComments(this.photoId)

        this.commentsForm = this.formBuilder.group({
            commentText: [{value: '', disabled: this.disabled}, Validators.maxLength(300)]
        })

//No template:

<textarea 
        [placeholder]="placeholder"
        class="form-control"
        formControlName = "commentText">
</textarea>

//inbound properties:

<ap-photo-comments [photoId]="photo.id" [allowComments]="photo.allowComments" ></ap-photo-comments>