It is hakaras Hatov for the past. Not (necessarily) angling for the future. If your mossad is in with the source, they will generally be OK without the ad. And if they’re not, the ad will only appear to be like ambulance (hearse?) chasing. And the gvir, who was smart enough to get as successful as he has gotten to be so far, will not fall for it.
This is meant as a general thought, not in direct relation to any specific niftar or nifteres.