There's more... 

The marketplace features the Azure DevOps Open in Excel extension (https://marketplace.visualstudio.com/items?itemName=blueprint.vsts-open-work-items-in-excel). This is a free extension that was created by Microsoft DevLabs, and adds the option of opening work items in Excel from various access points, such as work item queries, backlogs, and selective work items:

Another noticeable extension in the marketplace is the Requirements Integrator (https://marketplace.visualstudio.com/items?itemName=jgarverick.RequirementsIntegrator). This is an open source extension that was created by Microsoft MVP Josh Garverick, which introduces the capability of mapping external requirements into Azure DevOps Server to create a traceability matrix with work items. This extension introduces a new sub-tab called Requirements in the work hub, which allows you to import external requirements into TFS using a predefined Excel template:

The extension allows you to do the following:

• Manage requirements to work item mapping
• Display a sprint view that shows the requirements covered by a sprint
• Display a traceability matrix, including gaps, for requirements that are imported and mapped to WIs
• Restrict import usage to non-CMMI process templates
• Requirement visualization (visual traceability)
• Export requirement information to Excel 

I encourage you to look at the marketplace (https://marketplace.visualstudio.com/) as it has a range of extensions that enhance the experience of planning, tracking, and managing work items. While this extension isn't necessarily a replacement for the Excel add-in, you'll find that it enhances the work planning, tracking, and management experience.